Updated on 2024/04/12

写真a

 
SAKAGAMI Jun-Ichi
 
Organization
Research Field in Agriculture, Agriculture, Fisheries and Veterinary Medicine Area Faculty of Agriculture Department of Agriculture Professor
Title
Professor

Degree

  • 博士（農学） ( 1999.9   千葉大学 )

Research Interests

  • Germination

  • Environmental stress

  • Drought

  • Flood

  • Photosynthesis

  • Cassava

  • Chili

  • Sugarcane

  • Rice

  • Asia

  • Africa

  • Priming

  • Africa

  • Tropical Agriculture

  • Tropical Crop Science

  • Crop Science

Research Areas

  • Others / Others  / 作物学

  • Environmental Science/Agriculture Science / Crop production science

  • Environmental Science/Agriculture Science / Crop production science

Education

  • Chiba University

    - 1999.9

    　 More details

    Country： Japan

Research History

  • Kagoshima University   Professor

    2013.6

  • Kagoshima University   Faculty of Agriculture   Professor

    2013.6

  • Japan International Research Center for Agricultural Science   Crop production and Livestock   Chief Researcher

    2002.2 - 2013.5

    　 More details

    Country：Japan

  • Japan International Research Center for Agricultural Sciences

    2002.2 - 2013.5

  • National Agricultural Research Center

    2000.12 - 2002.1

  • Institut de Recherche pour Le Développement (IRD)   Gene Trop   Researcher

    1999.10 - 2000.11

▼display all

Professional Memberships

  • 日本熱帯農業学会

    2015.10

  • 日本作物学会評議委員会

    2015.10

  • 日本作物学会

    2014.4

  • JAPANESE SOCIETY FOR TROPICAL AGRICULTURE

  • CROP SCIENCE SOCIETY OF JAPAN

Committee Memberships

  • 日本作物学会九州支部   会長  

    2019.9   

    　 More details

    Committee type：Academic society

  • Crop Science Society of Japan   Director of Kyushu Branch of Crop Science Society of Japan  

    2019.9 - 2022.8   

    　 More details

    Committee type：Academic society

  • JICAカントー大学附帯強化プロジェクト   農業部門委員  

    2018.4   

    　 More details

    Committee type：Government

  • 日本熱帯農業学会   編集委員  

    2016.4   

    　 More details

    Committee type：Academic society

  • 日本熱帯農業学会   評議委員  

    2016.4   

    　 More details

    Committee type：Academic society

  • アジア作物学会   運営事務局長  

    2014.9   

    　 More details

    Committee type：Academic society

  • 日本作物学会   英文誌編集委員  

    2014.4   

    　 More details

    Committee type：Academic society

  • 日本作物学会   海外交流推進委員長  

    2013.4   

    　 More details

    Committee type：Academic society

  • 日本作物学会   評議委員  

    2013.4   

    　 More details

    Committee type：Academic society

▼display all

Studying abroad experiences

  • 1999.1 - 2000.10   Institut de Recherche pour Development  

  • 1991.7 - 1999.9   CAVIRAM  

 

Papers

  • Yabuta Shin, Odama Emmanuel, Tamaru Shotaro, Goto Keita, Chepkoech Rael, Sakagami Jun-Ichi .  Application of Several Primings to Cassava Seedling, Vegetative Propagated Crop, and its Effect on Initial Growth .  Abstracts of Meeting of the CSSJ256 ( 0 ) 21 - 21   2023.9Application of Several Primings to Cassava Seedling, Vegetative Propagated Crop, and its Effect on Initial Growth

    　More details

    Language：Japanese   Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.256.0_21

  • Tamaru Shotaro, Katsuhama Naoya, Goto Keita, Yabuta Shin, Sakagami Jun-Ichi .  Effect of hypoxic stress on roots of several Poaceae crops on dry matter production .  Abstracts of Meeting of the CSSJ255 ( 0 ) 27 - 27   2023.3Effect of hypoxic stress on roots of several Poaceae crops on dry matter production

    　More details

    Language：Japanese   Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.255.0_27

  • Katsuhama Naoya, Yabuta Shin, Sakagami Jun-Ichi .  Impact of Drought and Rewatering on Dry Matter Production and Photosynthesis in Sugarcane at the Early Growth Stage .  Abstracts of Meeting of the CSSJ255 ( 0 ) 25 - 25   2023.3Impact of Drought and Rewatering on Dry Matter Production and Photosynthesis in Sugarcane at the Early Growth Stage

    　More details

    Language：Japanese   Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.255.0_25

  • Keita Goto, Shin Yabuta, Peter Ssenyonga, Shotaro Tamaru, Jun Ichi Sakagami .  Response of leaf water potential, stomatal conductance and chlorophyll content under different levels of soil water, air vapor pressure deficit and solar radiation in chili pepper (Capsicum chinense) .  Scientia Horticulturae281   2021.4

    　More details

    Flood and drought have been increasing due to global climate changes and these extreme water-related events often affect crop productions globally. This study aims to develop a growth simulation model that correspond to sequential soil water status by revealing morph-physiological related responses on the chili pepper (Capsicum spp.). Two experiments were conducted in a greenhouse and nine treatments were established between dry and waterlogged soil conditions by using a slope field with sand. Results showed leaf water potential and stomatal conductance decreased with increasing soil water stress level. On the other hand, chili pepper increased total chlorophyll content and decreased chlorophyll a/b ratio to compensate the redaction of the leaf area as a response to soil water stress. Moreover, high air vapor pressure deficit and solar radiation condition influenced their morph-physiological traits as environmental stress coupled with soil water stress. A multiple regression model for estimating shoot dry weight (SDW) using plant height (PH) and soil plant analysis development (SPAD) was developed (SDW = 0.131 PH + 0.047SPAD − 2.408). It showed a high coefficient of determination (R = 0.836). This model is certainly useful for estimating SDW under wide range soil water statuses and vapor pressure deficit conditions. 2 adj

    DOI： 10.1016/j.scienta.2021.109943

    Scopus

  • Keita Goto, Shin Yabuta, Peter Ssenyonga, Shotaro Tamaru, Jun Ichi Sakagami .  Response of leaf water potential, stomatal conductance and chlorophyll content under different levels of soil water, air vapor pressure deficit and solar radiation in chili pepper (Capsicum chinense) .  Scientia Horticulturae 281   2021.4Response of leaf water potential, stomatal conductance and chlorophyll content under different levels of soil water, air vapor pressure deficit and solar radiation in chili pepper (Capsicum chinense) Reviewed

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

  • Putera H.R. .  Agronomic responses of several rice varieties on ratoon salibu system .  IOP Conference Series: Earth and Environmental Science694 ( 1 )   2021.3

    　More details

    Publisher：IOP Conference Series: Earth and Environmental Science  

    DOI： 10.1088/1755-1315/694/1/012030

    Scopus

  • Phanthasin Khanthavong , Shin Yabuta , Hidetoshi Asai, Md. Amzad Hossain, Isao Akagi, Jun-Ichi Sakagami .  Root Response to Soil Water Status via Interaction of Crop Genotype and Environment .  Agronomy11   1 - 15   2021.2Root Response to Soil Water Status via Interaction of Crop Genotype and Environment Reviewed International coauthorship

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

  • Arinal Haq Izzawati Nurrahma, Shin Yabuta, Ahmad Junaedi, Jun Ichi Sakagami .  Characterizing the photosynthetic ability of the submergence-tolerant rice variety of Inpari30 via maximum quantum yield performance during transient flooding stress and recovery .  Australian Journal of Crop Science 15   107 - 113   2021.1Characterizing the photosynthetic ability of the submergence-tolerant rice variety of Inpari30 via maximum quantum yield performance during transient flooding stress and recovery Reviewed International coauthorship

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

  • Mai Nhat Linh, Le Vinh Thuc, Jun-Ichi Sakagami, Susan Orgill, Tran Huu Van, Nguyen Quoc Khuong, Pham Phuoc Nhan .  Effects of Waterlogging on the Growth of Different Varieties of Sesame (Sesamum indicum L.) .    11   1 - 6   2021.1Effects of Waterlogging on the Growth of Different Varieties of Sesame (Sesamum indicum L.)

  • Nurrahma, A., Shin Yabuta, Ahmad Junaedi, and Jun-Ichi Sakagami .  Characterizing the photosynthetic ability of the submergence-tolerant rice variety of Inpari30 via maximum quantum yield performance during transient flooding stress and recovery .  Australian Journal of Crop Science15   107 - 113   2021.1Characterizing the photosynthetic ability of the submergence-tolerant rice variety of Inpari30 via maximum quantum yield performance during transient flooding stress and recoveryInvited Reviewed International coauthorship

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： https://www.cropj.com/nurrahma_15_1_2021_107_113.pdf

  • Arinal Haq Izzawati Nurrahma, Shin Yabuta, Ahmad Junaedi and Jun-Ichi Sakagami .  Analysis of Non-Structural Carbohydrate in Relation with Shoot Elongation of Rice under Complete Submergence .  Sustainability13   1 - 11   2021.1Analysis of Non-Structural Carbohydrate in Relation with Shoot Elongation of Rice under Complete SubmergenceReviewed International coauthorship

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： https://www.mdpi.com/2071-1050/13/2/670/htm

  • Thuc, L.V., J.I. Sakagami, N.Q. Khuong, S. Orgill, T.N. Huu, N.T.T. Lang and P.P. Nhan .  Effects of spraying gibberellic acid doses on growth, yield and oil content in black sesame (Sesamum indicum L.) .  Asian J. Crop Sci13   1 - 8   2021.1Effects of spraying gibberellic acid doses on growth, yield and oil content in black sesame (Sesamum indicum L.)Reviewed International coauthorship

    　More details

    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： https://www.ansinet.com/abstract.php?doi=ajcs.2021.1.8

  • Le Vinh Thuc, Jun-Ichi Sakagami, Nguyen Quoc Khuong, Susan Orgill, Tran Ngoc Huu, Nguyen Thi Thu Lang, Pham Phuoc Nhan .  Effects of Spraying Gibberellic Acid Doses on Growth, Yield and Oil Content in Black Sesame (Sesamum indicum L.) .  Asian Journal of Crop Science13   1 - 8   2021.1Effects of Spraying Gibberellic Acid Doses on Growth, Yield and Oil Content in Black Sesame (Sesamum indicum L.)

  • Arinal Haq Izzawati Nurrahma, Shin Yabuta, Ahmad Junaedi, Jun Ichi Sakagami .  Analysis of non-structural carbohydrate in relation with shoot elongation of rice under complete submergence .  Sustainability (Switzerland)13 ( 2 ) 1 - 11   2021.1

    　More details

    Publisher：MDPI  

    Regulation of non-structural carbohydrates (NSCs) are important for plants in response to submergence. In this study, the difference in non-structural carbohydrates in relation with shoot elongation between Sub1A and non-Sub1A rice genotypes was investigated. Two rice genotypes, namely Inpari30 (Sub1A genotype) and IR72442 (non-Sub1A genotype), were submerged completely for 6 days and re-aerated by lowering water level up to stem base for 6 days of post submergence. In addition, non-submerged plants (control) was treated with water level up to stem base during the experiment. Photosynthesis rate decreased in both submerged Inpari30 and IR72442 genotypes 71% and 96% lower than their control, respectively. Submerged IR72442 declined Fv/Fm 15.6% lowest than its control and both control and submerged Inpari30. Investigation of the distribution of starch and soluble sugar content in plant organs suggested that shoot elongation of non-Sub1A genotype led to starch and sugar consumption that distributed faster to the new developed organ during submergence. In contrast, Sub1A genotype of Inpari30, which did not exhibit shoot elongation and showed slower NSCs distribution during submergence, performed better on post submergence by maintaining NSCs and distributing to the new developed organ faster than IR72442. These results suggest that Sub1A genotype managed elongation and NSCs during submergence more efficiently than non-Sub1A genotype.

    DOI： 10.3390/su13020670

    Web of Science

    Scopus

  • Le Vinh Thuc, Jun Ichi Sakagami, Le Thanh Hung, Tran Ngoc Huu, Nguyen Quoc Khuong, Le Ly Vu Vi .  Foliar selenium application for improving drought tolerance of sesame (Sesamum indicum L.) .  Open Agriculture6 ( 1 ) 93 - 101   2021.1

    　More details

    Publisher：DE GRUYTER POLAND SP Z O O  

    Drought is the main constraint for crop growth worldwide. Selenium reportedly plays an important role in improving plant tolerance to drought stress. In this study, two experiments were conducted to investigate the effects of foliar selenium application on the drought tolerance of sesame. Five selenium concentrations (0, 5, 10, 20, and 40 mg/L) were used in the first experiment. Water deficit was triggered 25 days after sowing. The application of 5 or 10 mg/L of selenium maintained the number of leaves and increased the number of capsules. However, higher concentrations induced necrosis. The second experiment aimed to study the effect of selenium concentrations (5 and 10 mg/L) and the number of applications (one to three times). Drought stress was triggered 50 days after sowing, and selenium was sprayed 50, 55, and 60 days after sowing. The results indicated that a one-time foliar selenium application of 5 mg/L was able to maintain the number of leaves and to increase proline accumulation, plant biomass, and grain weight per plant. This finding confirms that selenium can be applied to enhance sesame's tolerance to drought stress.

    DOI： 10.1515/opag-2021-0222

    Web of Science

    Scopus

  • Le Vinh Thuc, Jun-Ichi Sakagami, Le Thanh Hung, Tran Ngoc Huu, Nguyen Quoc Khuong,Le Ly Vu Vi. .  Foliar selenium application for improving drought tolerance of sesame (Sesamum indicum L.) .  Open Agriculture ６   １ - ９   2021.1Foliar selenium application for improving drought tolerance of sesame (Sesamum indicum L.)Reviewed International coauthorship

    　More details

    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Open Agriculture  

    Drought is the main constraint for crop growth worldwide. Selenium reportedly plays an important role in improving plant tolerance to drought stress. In this study, two experiments were conducted to investigate the effects of foliar selenium application on the drought tolerance of sesame. Five selenium concentrations (0, 5, 10, 20, and 40 mg/L) were used in the first experiment. Water deficit was triggered 25 days after sowing. The application of 5 or 10 mg/L of selenium maintained the number of leaves and increased the number of capsules. However, higher concentrations induced necrosis. The second experiment aimed to study the effect of selenium concentrations (5 and 10 mg/L) and the number of applications (one to three times). Drought stress was triggered 50 days after sowing, and selenium was sprayed 50, 55, and 60 days after sowing. The results indicated that a one-time foliar selenium application of 5 mg/L was able to maintain the number of leaves and to increase proline accumulation, plant biomass, and grain weight per plant. This finding confirms that selenium can be applied to enhance sesame’s tolerance to drought stress.

    Other Link： https://www.degruyter.com/document/doi/10.1515/opag-2021-0222/html

  • Mai Nhat Linh, Le Vinh Thuc, Jun-Ichi Sakagami, Susan Orgill, Tran Huu Van, Nguyen Quoc Khuong, Pham Phuoc Nhan .  Effects of Waterlogging on the Growth of Different Varieties of Sesame (Sesamum indicum L.) .  Journal of Plant Research11 ( 1 ) 1 - 6   2021.1Effects of Waterlogging on the Growth of Different Varieties of Sesame (Sesamum indicum L.)Reviewed International coauthorship

    　More details

    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： http://article.sapub.org/10.5923.j.plant.20211101.01.html

  • Ju Young Choi, Seong Woo Cho, Jae Buhm Chun, Soo Jeong Kwon, Swapan Kumar Roy, Jwa Kyung Sung, Sun Hee Woo, Jun Ichi Sakagami .  Morpho-physiological response of common buckwheat (Fagopyrum esculentum) to flooding stress at different growth stages .  Journal of Crop Science and Biotechnology24 ( 1 ) 41 - 49   2021.1

    　More details

    Flooding is one of the major abiotic stresses which accounts for considerable damage to plant growth and development and induces multiple morpho-physiological dysfunctions in many crop plants, including buckwheat. The present study aimed to elucidate the potential stage and duration of waterlogging treatment during the various stage that had the most severe effect on yield in common buckwheat (Fagopyrum esculentum cv. Harunoibuki). The plants were subjected to flooding stress during 3 days at ES, MS, and FS with 5 cm of water depth. The results showed that the plant height, SPAD (soil plant analysis development) value, chlorophyll fluorescence, root analysis (length, surface area, and volume), and dry weight were found to be influenced when plants were exposed to flooding stress at each stage. Here it was demonstrated that root parameters were more impaired by flooding stress than shoot parameters. The findings concluded that early growth stage was more sensitive regarding physiological characteristics (value of SPAD and chlorophyll fluorescence) and root morphology (root length, surface area, volume, and dry weight) under flooding stress in common buckwheat.

    DOI： 10.1007/s12892-020-00044-7

    Scopus

  • Arinal Haq Izzawati Nurrahma, Shin Yabuta, Ahmad Junaedi, Jun Ichi Sakagami .  Characterizing the photosynthetic ability of the submergence-tolerant rice variety of Inpari30 via maximum quantum yield performance during transient flooding stress and recovery .  Australian Journal of Crop Science15 ( 1 ) 107 - 113   2021

    　More details

    Submergence is an environmental challenge for crop cultivation which causes physiological perturbation and yield loss. Tolerant genotypes are characterized by the ability to maintain physiological processes, especially photosynthesis, minimizing the negative effects of flooding stress. This experiment was aimed to examine the photosynthetic ability during submergence and a recovery period in rice variety of Inpari30 (carrying gene Sub1) compared to IR72442 (an elongation type) under control and submergence treatment. A randomized complete block design was employed in this experiment with three replications. The first factor was the environmental condition consisting of control and submergence. The second factor was rice varieties consisting of Inpari30 and IR72442. Fourteen-day-old seedlings were submerged under 35 cm of water depth for 6 days and re-aerated by lowering the water level up to the stem base for 6 days of recovery. Measurement of plant height, SPAD, Fv/Fm and photosynthetic rate were taken continuously from the same plant sample following the experimental stage. The results showed that shoot length increased significantly more in IR72442 than in the quiescent Inpari30. The noticeable decline was observed in the photosynthetic rate of both varieties during submergence with chlorophyll content and chlorophyll fluorescence (Fv/Fm) decreased more severely in IR72442 than in Inpari30. After flooding, Inpari30 adapted quickly to the aerobic environment, as shown by a recovery in Fv/Fm and accumulated dry weight more quickly than IR72442. We concluded that the Sub1 genotype of Inpari30 confers the ability to maintain maximum quantum yield of PSII under conditions of limiting gas exchange for photosynthesis for adapting post submergence.

    DOI： 10.21475/ajcs.21.15.01.2889

    Scopus

  • Nurrahma Arinal H. I., Goto Keita, Yabuta Shin, Junaedi Ahmad, Kojima Mikiko, Takebayashi Yumiko, Sakakibara Hitoshi, Sakagami Jun-Ichi .  Plant hormone regulation between <i>Sub1A</i> and non-<i>Sub1A</i> rice genotype during temporary submergence .  日本作物学会講演会要旨集251 ( 0 ) 102 - 102   2021

    　More details

    Publisher：日本作物学会  

    DOI： 10.14829/jcsproc.251.0_102

  • Goto Keita, Yabuta Shin, Sakagami Jun-Ichi .  Changes in leaf chlorophyll content, chlorophyll a/b ratio and leaf area corresponded to different level of soil moisture status and incident light energy .  Abstracts of Meeting of the CSSJ251 ( 0 ) 162 - 162   2021

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.251.0_162

  • Nakao Yoshihiro, Tamaru Shotaro, Yabuta Shin, Sakagami Jun-Ichi .  Study of the Vitality of Primed Rice Seed in Extremely Dry Soil Conditions .  Abstracts of Meeting of the CSSJ251 ( 0 ) 103 - 103   2021

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.251.0_103

  • Tamaru Shotaro, Yabuta Shin, Sakagami Jun-Ichi .  The effect of radial oxygen loss and oxygen consumption of rice root to 0.1% agar solution .  Abstracts of Meeting of the CSSJ251 ( 0 ) 139 - 139   2021

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.251.0_139

  • Khanthavong Phanthasin, Yabuta Shin, Sakagami Jun-Ichi .  Root response to various soil water status via interaction of crop genotype and environment .  日本作物学会講演会要旨集251 ( 0 ) 106 - 106   2021

    　More details

    Publisher：日本作物学会  

    DOI： 10.14829/jcsproc.251.0_106

  • Momoko IWATA-HIGUCHI , Jun-Ichi SAKAGAMI and Sachio MARUYAMA .  Effect of soil moisture stress at booting and flowering stages on pollen development, pollination and fertilization in upland NERICA cultivars .  Australian Journal of Crop Science14   1935 - 1941   2020.12Effect of soil moisture stress at booting and flowering stages on pollen development, pollination and fertilization in upland NERICA cultivarsReviewed

    　More details

    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： https://www.cropj.com/iwatta_14_12_2020_1935_19141.pdf

  • Laily Ilman Widuri, Benyamin Lakitan, Jyunichi Sakagami, Shin Yabuta, Kartika Kartika, Erna Siaga .  Short-term drought exposure decelerated growth and photosynthetic activities in chili pepper (Capsicum annuum L.) .  Annals of Agricultural Sciences65 ( 2 ) 149 - 158   2020.12

    　More details

    Chili pepper (Capsicum annuum L.) is a preferred vegetable by local farmers at a riparian wetland in Indonesia due to high market demand and its economic value. Chili pepper can be grown immediately after rice harvesting, concurrently with the early dry season. Three chili pepper varieties, namely Genie, Romario, and Laris were evaluated for their adaptability to drought condition. Drought treatment was imposed for 7 days until soil water potential was dropped to around −30 to −40 kPa. Morphological and photosynthetic traits were measured at pre-, during, and post-drought exposures. Growth analysis was calculated based on measured morphological traits. Results indicated that the number of leaves (NoL), total leaf area (TLA), total accumulated dry matter (TDM), and relative growth rate (RGR) were negatively affected by drought. Water content of shoot (SWC), leaf (LWC), and root (RWC) were significantly decreased during drought exposure; yet, able to fully recover at 7 days after drought treatment was terminated. Decrease in shoot root ratio (SRR) and leaf weight ratio (LWR); reversely, increase the root weight ratio (RWR) under drought condition, was not associated with enhancement of root growth. Rather, it was due to less negatively effect of drought on roots than on the above-ground organs. Simultaneously, chlorophyll fluorescence, LWC, stomatal conductance, transpiration and photosynthetic rates declined during drought exposure. However, 7 days after drought treatment was terminated, all traits were able to return to pre-drought levels. Among chili pepper varieties studied, Genie exhibited better overall performance than Laris and Romario did under drought stress condition.

    DOI： 10.1016/j.aoas.2020.09.002

    Scopus

  • Laily Ilman Widuria, Benyamin Lakitan, Junichi Sakagami, Shin Yabuta, KartikaKartika, Erna Siaga .  Short-term drought exposure decelerated growth and photosynthetic activities in chili pepper (Capsicum annuum L .  Annals of Agricultural Sciences65   149 - 158   2020.9Short-term drought exposure decelerated growth and photosynthetic activities in chili pepper (Capsicum annuum LReviewed International coauthorship

    　More details

    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    Other Link： https://www.sciencedirect.com/science/article/pii/S0570178320300403?via%3Dihub

  • Yoshihiro Nakao, Chiharu Sone, Jun Ichi Sakagami .  Genetic diversity of hydro priming effects on rice seed emergence and subsequent growth under different moisture conditions .  Genes11 ( 9 ) 1 - 14   2020.9

    　More details

    Publisher：MDPI  

    Seed priming refers to seed enhancement methods that stimulate seed metabolism. This study evaluated the genetic diversity of hydro priming efficacy in 27 different genotypes of rice under dry to wet soil moisture conditions. The genotypes included 21 genotypes of Oryza sativa, five genotypes of Oryza glaberrima, and one genotype of NERICA (New Rice for Africa). The treated rice seeds were sown in plastic boxes under four soil moisture conditions (5%, 10%, 15%, and 20% (w/w)). The genotypes were categorized into six groups based on growth parameters using hierarchical cluster analysis. Furthermore, emergence properties were investigated by using principal component analysis based on the mean emergence time of control and primed seeds. Seed priming enhanced growth performance under the moderate dry conditions of 10% and 15% soil moisture. Meanwhile, priming efficacy was low in water stress conditions of 5% and 20% soil moisture. There were wide‐ranging genotypic differences of priming efficacy under 20% soil moisture condition. Our findings indicate that the anaerobic‐tolerant genotypes tend to exhibit priming efficacy under high soil moisture conditions. Furthermore, one group included all upland genotypes of O. sativa. This group originally adapted to 10% and 15% of dry conditions, and seed priming improved their features greatly.

    DOI： 10.3390/genes11090994

    Web of Science

    Scopus

    PubMed

  • Nakao Yoshihiro, Chiharu Sone, and Jun-Ichi Sakagami .  Genetic Diversity of Hydro Priming Effects on Rice Seed Emergence and Subsequent Growth under Different Moisture Conditions .  Genes11 ( 9 )   2020.8Genetic Diversity of Hydro Priming Effects on Rice Seed Emergence and Subsequent Growth under Different Moisture ConditionsReviewed

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

  • S. M. Masum, H. Akamine, M. A. Hossain, J. I. Sakagami, T. Ishi, S. Gima .  Assessment of the allelopathic potential and identification of the phytotoxic substances from the straw of Bangladeshi indigenous rice variety ‘goria’ .  Applied Ecology and Environmental Research18   5547 - 5560   2020.8Assessment of the allelopathic potential and identification of the phytotoxic substances from the straw of Bangladeshi indigenous rice variety ‘goria’ Reviewed International coauthorship

    　More details

    Language：English  

  • Ju-Young Choi, Seong-Woo Cho, Jae-Buhm Chun, Soo Jeong Kwon, Swapan Kumar Roy, Jwa-Kyung Sung, Sun-Hee Woo, Jun-Ichi Sakagami .  Morpho-physiological response of common buckwheat (Fagopyrum esculentum) to flooding stress at different growth stages .  Journal of Crop Science and Biotechnology   2020.6Morpho-physiological response of common buckwheat (Fagopyrum esculentum) to flooding stress at different growth stagesReviewed

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

  • Kartika Kartika, Jun-Ichi Sakagami, Benyamin Lakitan, Shin Yabuta, Andi Wijay, Sabaruddin Kadir, Laily Ilman Widuri, Erna Siaga, Yoshihiro Nakao .  Morpho-Physiological Response of Oryza glaberrima to Gradual Soil Drying .  RICE SCIENCE27   67 - 74   2020.1Morpho-Physiological Response of Oryza glaberrima to Gradual Soil DryingReviewed International coauthorship

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

  • J. I. Sakagami, Y. Iwata, A. H.I. Nurrahma, E. Siaga, A. Junaedi, S. Yabuta .  Plant adaptations to anaerobic stress caused by flooding .  IOP Conference Series: Earth and Environmental Science418 ( 1 )   2020.1

    　More details

    Flooding imposes a severe selection pressure on plants principally because excess water in their surroundings can deprive them of certain basic needs, notably of oxygen and of carbon dioxide and light for photosynthesis. It is one of the major abiotic influences on species' distribution and agricultural productivity world-wide. A cultivated species, O. glaberrima is origin from Africa that spread to floodplains area along river. Work to develop more tolerant crops or manage flood-prone environments more effectively is also included. Here, recent progress in elucidating the mechanisms determining tolerance versus intolerance to anaerobic stress caused by flooding in higher plants is discussed. This work integrates various specialized approaches ranging from morphology to physiology, and demonstrates how plant biology can be harnessed to improve stress tolerance in an important crop species. Materials and Methods: The research is conducted in various place of fields. As materials of rice and sugarcane, and chilli pepper are used in the experiments. Results and Discussion: We emphasize that Sub1A is not appropriate when selecting and breeding rice cultivars of O. glaberrima for resilience to longer-term submergence. Under these circumstances, a vigorous ethylene-mediated underwater elongation response by leaves is needed to return leaves to air-contact and full photosynthetic activity. Root aerenchyma is formed in waterlogged condition to on the genotype of sugarcane and oxygen in the air is supplied to the root system thorough aerenchyma. The supplied oxygen is used for root system respiration.

    DOI： 10.1088/1755-1315/418/1/012080

    Scopus

  • J. I. Sakagami, Y. Iwata, A. H.I. Nurrahma, E. Siaga, A. Junaedi, S. Yabuta .  Plant adaptations to anaerobic stress caused by flooding .  IOP Conference Series: Earth and Environmental Science 418   2020.1Plant adaptations to anaerobic stress caused by flooding Invited Reviewed International coauthorship

    　More details

    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (international conference proceedings)  

  • Kartika Kartika, Jun Ichi Sakagami, Benyamin Lakitan, Shin Yabuta, Andi Wijaya, Sabaruddin Kadir, Laily Ilman Widuri, Erna Siaga, Yoshihiro Nakao .  Morpho-Physiological Response of Oryza glaberrima to Gradual Soil Drying .  Rice Science27 ( 1 ) 67 - 74   2020.1

    　More details

    Publisher：ELSEVIER  

    Soil drought occurrence during dry season has been the main constraint, besides prolonged flooding during rainy season, in increasing cropping intensity and rice productivity in tropical riparian wetland. Use of drought tolerant rice genotype might be a suitable option for overcoming such problem. This study focused on the effects of gradual soil drying during early vegetative growth stage on morphological and physiological traits of five Oryza glaberrima genotypes, namely RAM12, RAM14, RAM59, RAM97 and RAM101, and two Oryza sativa subsp japonica genotypes, i.e. Koshihikari and Minamihatamochi. The plants were subjected to 6 d of gradual soil drying condition from 15 days after transplanting (DAT) to 20 DAT, and were allowed to recover until 22 DAT. Gradual soil drying reduced plant growth as indicated by dry mass accumulation. Drought reduced stomatal conductance and increased leaf rolling score of all the genotypes. All the genotypes showed comparable response on stomatal conductance, but O. glaberrima genotypes performed higher in leaf rolling recovery. Meanwhile, O. sativa genotypes decreased total leaf area and specific leaf area, but increased specific leaf weight in order to avoid further damages due to drought stress. Drought tolerance mechanisms in RAM101, RAM12, RAM59 and RAM14 were associated with leaf morpho-physiological responses, root traits and dry biomass accumulation.

    DOI： 10.1016/j.rsci.2019.12.007

    Web of Science

    Scopus

  • Momoko Iwata-Higuchi, Jun Ichi Sakagami, Sachio Maruyama .  Effect of soil moisture stress at booting and flowering stages on pollen development, pollination and fertilization in upland NERICA cultivars .  Australian Journal of Crop Science14 ( 12 ) 1935 - 1941   2020

    　More details

    Spikelet sterility induced by soil moisture stress during reproductive development greatly limits grain yield in upland rice. This study aimed to elucidate differences in responses to soil moisture stress for pollen development, pollination and fertilization among upland rice cultivars. A greenhouse experiment with a split-plot design was performed for five different soil moisture treatments (T1 to T5) as the main plots and three cultivars (NERICA 1, NERICA 4 and Yumenohatamochi) as subplots, each with three replicates. Plants in pots were grown under well-watered condition (T1) and various moisture stress conditions: moderate at the booting stage (T2), severe at the booting stage (T3), moderate at the flowering stage (T4) or severe at the flowering stage (T5). During the 9-day stress period, soil moisture was maintained at -10 to -20 kPa for moderate moisture stress or -20 to -49 kPa for severe moisture stress under controlled irrigation. NERICA 1 had fewer differentiated microspores and developed pollen grains in T2 and T3 and showed poorer anther dehiscence and fewer pollen grains on the stigma than did NERICA 4 and Yumenohatamochi. NERICA 4 showed a lower percentage of basal dehiscence in T4 and T5, causing fewer pollen grains to be deposited on the stigma than for NERICA 1 and Yumenohatamochi. The results indicate that the highly sensitive process of fertilization are pollen development in NERICA 1 and pollination in NERICA 4 under soil moisture stress.

    DOI： 10.21475/ajcs.20.14.12.2774

    Scopus

  • S. M. Masum, H. Akamine, M. A. Hossain, J. I. Sakagami, T. Ishii, S. Gima .  Assessment of the allelopathic potential and identification of the phytotoxic substances from the straw of Bangladeshi indigenous rice variety ‘goria’ .  Applied Ecology and Environmental Research18 ( 4 ) 5547 - 5560   2020

    　More details

    Straw from Bangladeshi indigenous rice (Oryza sativa L. ssp. indica) variety ‘Goria’ was incorporated into a gray soil to observe the phytotoxic effects on Echinochloa oryzicola. The residues of ‘Goria’ caused inhibition on the growth and dry weight of E. oryzicola. The rate of ‘Goria’ straw incorporation was sequentially evaluated to observe autotoxicity in the cultivation of the same rice variety. An improvement was found on the growth and yield parameters of rice due to the straw incorporation into the soil. Aqueous methanol extracts of ‘Goria’ straw inhibited the seedling growth of Lepidium sativum L. and E. oryzicola, which suggested that this variety might contain phytotoxic substance(s). Two biologically active compounds, (-)-loliolide and 3β-hydroxy-5α,6α-epoxy-7megastigmen-9-one, were isolated using several chromatographic steps. The phytotoxic potential of these two compounds was assayed in vitro on the seedling growth of test flora to validate it. The inhibitory activity of 3β-hydroxy-5α,6α-epoxy-7-megastigmen-9-one was greater than that of (-)-loliolide, as demonstrated by comparison of the I values. However, the two compounds synergistically suppressed the growth of L. sativum and E. oryzicola more strongly than the individual compounds. The results suggest that incorporation of allelopathic rice Goria-straw could help suppress E. oryzicola in rice to achieve non-herbicidal weed control. 50

    DOI： 10.15666/aeer/1804_55475560

    Scopus

  • Nurrahma Arinal Haq Izzawati, Yabuta Shin, Sakagami Jun-Ichi .  Starch and sugar as source of reserved carbohydrates on rice with different mechanism toward submergence .  日本作物学会講演会要旨集249 ( 0 ) 102 - 102   2020

    　More details

    Publisher：日本作物学会  

    DOI： 10.14829/jcsproc.249.0_102

  • Tamaru Shotaro, Yabuta Shin, Sakagami Jun-Ichi .  Anaerobic response of lysigenous aerenchyma and size of tissue in rice seminal root .  Abstracts of Meeting of the CSSJ249 ( 0 ) 111 - 111   2020

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.249.0_111

  • Nakao Yoshihiro, Yoshino Minoru, Miyamoto Kisho, Kamioka Rieko, Hatanaka Keisuke, Sakagami Jun-Ichi .  Effects of rice seed hydro-priming on yield of rainfed upland rice .  Abstracts of Meeting of the CSSJ249 ( 0 ) 20 - 20   2020

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.249.0_20

  • Kartika KARTIKA, Jun-Ichi SAKAGAMI, Benyamin LAKITAN, Shin YABUTA, Andi WIJAYA, Sabaruddin KADIR, Laily Ilman WIDURI, Erna SIAGA, Yoshihiro NAKAO .  Morpho-Physiological Response of Oryza glaberrima to Gradual Soil Drying .  Rice Science 27   67 - 74   2019.12Morpho-Physiological Response of Oryza glaberrima to Gradual Soil DryingReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Momoko IWATA-HIGUCHI, Jun-Ichi SAKAGAMI, Sachio MARUYAMA .  Effect of Soil Moisture Stress at Panicle Development Stage on Spikelet Differentiation and Degeneration of Upland NERICA Cultivars .  Effect of Soil Moisture Stress at Panicle Development Stage on Spikelet Differentiation and Degeneration of Upland NERICA Cultivars63   150 - 159   2019.12Effect of Soil Moisture Stress at Panicle Development Stage on Spikelet Differentiation and Degeneration of Upland NERICA Cultivars

  • Erna Siaga, Jun Ichi Sakagami, Benyamin Lakitan, Shin Yabuta, Hasbi Hasbi, Siti Masreah Bernas, Kartika Kartika, Laily Ilman Widuri .  Morpho-physiological responses of chili peppers (Capsicum annuum) to short-term exposure of water-saturated rhizosphere .  Australian Journal of Crop Science13 ( 11 ) 1865 - 1872   2019.11

    　More details

    Chili pepper is frequently grown by local farmers at riparian wetland during dry season in Indonesia. However, during the last decade, unpredictable distribution and intensity of rainfall have increasingly threatened chili pepper production at the wetlands due to untimely water-saturated rhizosphere (WSR) occurrences. WSR is a condition when all pores within root zone were filled with water. This condition can be simulated by adding water into growing substrate until a thin layer of water was visible above substrate surface. Two Indonesian varieties (Laris and Romario) and one Japanese variety (Takanotsume) were used in this study. Aim of this study was to evaluate morpho-physiological effects of short-term (4 days) WSR exposure in chili pepper. Results of this study revealed that roots suffered more than aerial organs as indicated by the increase of shoot/root ratio from 4.56 at pre-exposure to 7.03 at end of the exposure. Total leaf area significantly reduced since larger older leaves were replaced by newly developed smaller leaves. Relative water content (RWC) in all organs was decreased, but did not reach a detrimental level. Leaf RWC was decreased from 83.6% at pre-exposure to 77.8% after the exposure; however, leaf RWC was able to rebound to 81.5% after 7 days of recovery. Photosynthetic and transpiration rates sharply decreased, associated with decrease in stomatal conductance during WSR exposure. Chlorophyll fluorescence also sharply declined. Gas exchange parameters did not significantly recover after 7 days of recovery in all varieties. Meanwhile, SPAD values were not affected by WSR exposure.

    DOI： 10.21475/ajcs.19.13.11.p2046

    Scopus

  • Erna Siaga, Jun-Ichi Sakagami, Benyamin Lakitan, Shin Yabuta, Hasbi Hasbi, Siti Masreah Bernas, Kartika Kartika, Laily Ilman Widuri .  Morpho-physiological responses of chili peppers (Capsicum annuum) to short-term exposure of water-saturated rhizospher .  Australian Journal of Crop Science13   1865 - 1872   2019.10Morpho-physiological responses of chili peppers (Capsicum annuum) to short-term exposure of water-saturated rhizospherReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • ISLAM M. K.,SANO A.,MAJUMDER M. S.,SAKAGAMI J-I.,GIMA, HOSSAIN M. A. .  Evaluation of Organic Acid Production Potential of Phosphate Solubilizing Fungi Isolated from Soils in Okinawa, Japan .  Applied Ecology and Environmental Research17 ( 6 ) 15191 - 15201   2019.10Evaluation of Organic Acid Production Potential of Phosphate Solubilizing Fungi Isolated from Soils in Okinawa, JapanReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • J-I. Sakagami, Y. Iwata, A H I. Nurrahma, E. Siaga, A. Junaedi, S. Yabuta .  Plant adaptations to anaerobic stress caused by flooding .  Earth and Environmental Science418   1 - ７   2019.10Plant adaptations to anaerobic stress caused by floodingInvited Reviewed

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing Ltd  

  • Takeo Sakaigaichi, Hiroka Tsuchida, Katsuki Adachi, Taiichiro Hattori, Yusuke Tarumoto, Minoru Tanaka, Michiko Hayano, Jun Ichi Sakagami, Shin Irei .  Phenological Changes in the Chlorophyll Content and Its Fluorescence in Field-Grown Sugarcane Clones Under Over-Wintering Conditions .  Sugar Tech21 ( 5 ) 843 - 846   2019.10

    　More details

    Publisher：SPRINGER INDIA  

    © 2019, Society for Sugar Research &amp; Promotion. As a step toward breeding cultivars with tolerance to chilling stress, phenological changes in chlorophyll content (SPAD index) and its fluorescence (Fv/Fm) were investigated under over-wintering conditions using different sugarcane clones. A leading commercial cultivar in Japan, NiF8, and two interspecific lines, KY11-6114 and KY08-1200, were tested in this study. Daily minimum temperature decreased gradually with the advance of winter, and the lowest temperature of 1.2 °C was recorded in January. Although the temperature increased toward spring season, it remained below 10 °C until the end of experiment. Stem elongations in KY11-6114 and KY08-1200 during winter were significantly greater than in NiF8. The decrease in SPAD index was calculated from the difference between the beginning of winter and each measuring time. KY08-1200 and KY11-6114, with longer stem elongation, had a smaller decrease in SPAD index than NiF8 under over-wintering conditions. The Fv/Fm of all three clones decreased in January when the lowest temperature was recorded and recovered toward spring. Among three clones, KY08-1200 was less affected by chilling stress and presented a higher value of Fv/Fm up to the end of experiment. Considering these results, we concluded that the decreased chlorophyll content measured by the SPAD index was a simple indicator for screening chilling-tolerant clones.

    DOI： 10.1007/s12355-018-0693-0

    Web of Science

    Scopus

  • Islam M. K., Sano A., Majumder M. S. I., Ssakagami J-I., Hossain M. A. .  Isolation and Molecular Characterization of Phosphate Solubilizing Filamentous Fungi from Subtropical Soils in Okinawa, Japan .  Applied Ecology and Environmental Research17   9145 - 9157   2019.9Isolation and Molecular Characterization of Phosphate Solubilizing Filamentous Fungi from Subtropical Soils in Okinawa, JapanReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • IWATA‐HIGUCHI Momoko, SAKAGAMI Jun‐Ichi, MARUYAMA Sachio .  Effect of Soil Moisture Stress at Panicle Development Stage on Growth and Yield of Upland NERICA Cultivars .  Tropical Agriculture and Development63 ( 3 ) 140‐149   2019.9Effect of Soil Moisture Stress at Panicle Development Stage on Growth and Yield of Upland NERICA Cultivars

    　More details

  • Momoko IWATA-HIGUCHI, Jun-Ichi SAKAGAMI, Sachio MARUYAMA .  Effect of Soil Moisture Stress at Panicle Development Stage on Growth and Yield of Upland NERICA Cultivars .  Trop. Agr. Develop63   140 - 149   2019.8Effect of Soil Moisture Stress at Panicle Development Stage on Growth and Yield of Upland NERICA CultivarsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Momoko IWATA-HIGUCHI , Jun-Ichi SAKAGAMI , Sachio MARUYAMA .  Effect of Soil Moisture Stress at Panicle Development Stage on Spikelet Differentiation and Degeneration of Upland NERICA Cultivars .  Trop. Agr. Develop63   150 - 159   2019.8Effect of Soil Moisture Stress at Panicle Development Stage on Spikelet Differentiation and Degeneration of Upland NERICA CultivarsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Sheikh Muhammad Masum, Mohammad Amzad Hossain, Hikaru Akamine, Jun Ichi Sakagami, Takahiro Ishii, Toshihiro Konno, Ichiro Nakamura .  Comparison Study of Allelochemicals and Bispyribac-Sodium on the Germination and Growth Response of Echinochloa crus-galli L. .  Journal of Plant Growth Regulation38 ( 2 ) 501 - 512   2019.6

    　More details

    Publisher：SPRINGER  

    © 2018, Springer Science+Business Media, LLC, part of Springer Nature. The phytotoxic effects of two allelochemicals (trans-cinnamic acid and syringaldehyde) at different concentrations (1000, 100, 10, and 1 µM) on seed germination, seedling growth, and physiological and biochemical changes of Echinochloa crus-galli L. were tested by comparison to a commercial herbicide ‘Nominee’ (that is, 100 g/L bispyribac-sodium). trans-Cinnamic acid and the herbicide inhibited seed germination completely at 100 µM, whereas for syringaldehyde, complete inhibition required 1000 µM. However, with 100 µM syringaldehyde, the seed germination of the test species was 53% of the control. Allelochemicals and the herbicide delayed seed germination and significantly affected the speed of germination index (S), speed of cumulative germination index (AS), and coefficient of germination rate (CRG). The roots were more affected when nutrients were not added to the growth bioassay. In general, with the increasing concentration of allelochemicals from 100 to 1000 µM, the inhibitory effects increased. Via microscopy analysis, we found leaf blade wilting and necrosis at concentrations above 100 µM in allelochemical-treated plants. Roots of E. crus-galli treated with 1000 µM allelochemicals had black points on root nodes but had no root hairs. The anatomy of roots treated with allelochemicals (1000 µM) showed contraction or reduction of root pith cells as well as fewer and larger vacuoles compared to the control. The allelochemicals also showed remarkable effects on seedling growth, SPAD index, chlorophyll content, and free proline content in a pot culture bioassay, indicating that trans-cinnamic acid and syringaldehyde are potent inhibitors of E. crus-galli growth and can be developed as herbicides for future weed management strategies.

    DOI： 10.1007/s00344-018-9865-0

    Web of Science

    Scopus

  • Sheikh Muhammad Masum, Mohammad Amzad Hossain, Hikaru Akamine, Jun Ichi Sakagami, Takahiro Ishii, Ichiro Nakamura, Md Asaduzzaman, Prasanta Chitta Bhowmik .  Performance of Bangladesh indigenous rice in a weed infested field and separation of allelopathy from resource competition .  Weed Biology and Management19 ( 2 ) 39 - 50   2019.6

    　More details

    Publisher：WILEY  

    © 2019 Weed Science Society of Japan This study aimed to identify the potential allelopathic indigenous rice (Oryza sativa L. ssp. indica) varieties from Bangladesh using a performance study in a weed-infested field and to assess the extent of allelopathic interference relative to resource competition in a glasshouse experiment. Six varieties – namely, “Boterswar,” “Goria,” “Biron” and “Kartiksail” as the most allelopathic, “Hashikolmi” as weakly allelopathic and “Holoi” as nonallelopathic – were raised following a nonweed control method. The infestation levels of weed species were calculated using Simpson&#039;s Diversity Index (SDI), which ranged from 0.2 to 0.56. However, a significant correlation coefficient (0.87, P &lt; 0.001) was obtained from these field data compared with the root inhibition percentage from the laboratory bioassay, and the “Boterswar” variety was the most allelopathic. The interactions between the allelopathic variety “Boterswar,” weakly allelopathic variety “Hashikolmi” and Echinochloa oryzicola via a target (rice)-adjacent (E. oryzicola) cogrowth culture were determined in a hydroponic arrangement. The relative competitive intensity (RCI) and the relative neighbor effect (RNE) values showed that the crop–weed interaction was facilitation for “Boterswar” and competition for “Hashikolmi” and E. oryzicola in rice/E. oryzicola cogrowth cultures. The allelopathic effects of “Boterswar” were much higher than the resource competition in rice/E. oryzicola cogrowth cultures. The converse was observed for “Hashikolmi.” Moreover, the mineral content of E. oryzicola was severely affected by “Boterswar”/E. oryzicola cogrowth cultures’ exudate solution. Therefore, the allelopathic potential of “Boterswar” variety might be useful for developing the weed-suppressing capacity of rice, which will likely have a significant influence on paddy weed control.

    DOI： 10.1111/wbm.12174

    Web of Science

    Scopus

  • Takeo Sakaigaichi, Hiroka Tsuchida, Katsuki Adachi, Taiichiro Hattori, Yusuke Tarumoto, Minoru Tanaka, Michiko Hayano, Jun Ichi Sakagami, Shin Irei .  Phenological Changes in the Chlorophyll Content and Its Fluorescence in Field-Grown Sugarcane Clones Under Over-Wintering Conditions .  Sugar Tech 21   843 - 846   2019.1Phenological Changes in the Chlorophyll Content and Its Fluorescence in Field-Grown Sugarcane Clones Under Over-Wintering ConditionsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Sheikh Muhammad Masum, Mohammad Amzad Hossain, Hikaru Akamine, Jun Ichi Sakagami, Takahiro Ishii, Ichiro Nakamura, Md Asaduzzaman, Prasanta Chitta Bhowmik .  Performance of Bangladesh indigenous rice in a weed infested field and separation of allelopathy from resource competition .  Weed Biology and Management 19   30 - 50   2019.1Performance of Bangladesh indigenous rice in a weed infested field and separation of allelopathy from resource competition Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Choi Ju-Young, Nurrahma Arinal H.I., Iwata Yukiko, Nakao Yoshihiro, Yabuta Shin, Roy Swapan Kummer, Kwon Soo-Jeong, Woo Sun-Hee, Sakagami Jun-Ichi .  Morpho-physiological response of flooding stress at different growth stages of Common Buckwheat ( <i>Fagopyrum esculentum</i> ) .  Abstracts of Meeting of the CSSJ247 ( 0 )   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_52

  • Islam M. .  Isolation and molecular characterization of phosphate solubilizing filamentous fungi from subtropical soils in Okinawa .  Applied Ecology and Environmental Research17 ( 4 ) 9145 - 9157   2019

    　More details

    Publisher：Applied Ecology and Environmental Research  

    DOI： 10.15666/aeer/1704_91459157

    Scopus

  • M. K. Islam, A. Sano, M. S.I. Majumder, J. I. Sakagami, S. Gima, M. A. Hossain .  Evaluation of organic acid production potential of phosphate solubilizing fungi isolated from soils in Okinawa, Japan .  Applied Ecology and Environmental Research17 ( 6 ) 15191 - 15201   2019

    　More details

    Deficiency of available phosphorous (P) in soil is one of the major factors that limit plant growth and yield. Microorganisms play an important role to improving available P status in soil by solubilization. Although phosphate solubilizing mechanism is not clearly understood, organic acid production seems to be the main mechanism of P solubilizing. Therefore, present study evaluated the organic acid production potentials of 16 P solubilizing fungal strains (2 Aspergillus floccosus, 3 Aspergillus niger, 2 Aspergillus niveus, 2 Penicillium oxalicum, 5 Penicillium spp. and 2 Talaromyces pinophilus isolates) isolated from soils in Okinawa, Japan to select outstanding strains that could facilitate the P solubilization process. Results revealed that both type and quantity of microbial organic acids production depend on the P sources and fungal strains. The highest quantity of organic acids was found when Ca (PO ) was used as substrate followed by FePO and AlPO . Based on the organic acids production potential, A. niger (SI-12URAgr) considered as outstanding P solubilizing fungi regardless of substrates followed P. oxalicum (SI-6URAgr, SI-16URAgr) and A. niger (SI-10URAgr). These strains could have great potential as promising bioresource for efficient P utilization in agricultural production. 3 4 2 4 4

    DOI： 10.15666/aeer/1706_1519115201

    Scopus

  • Nurrahma Arinal Haq Izzawati, Yabuta Shin, Junaedi Ahmad, Sakagami Jun-Ichi .  Photosynthetic rates of rice with contrast mechanism during complete submergence followed by reaeration condition .  Abstracts of Meeting of the CSSJ247 ( 0 )   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_30

  • Yabuta Shin, Nakao Yoshihiro, Nurrahma Arinal H.I., Sakagami Jun-Ichi .  Effect on the Change of Green Leaf Area at Ripening period on Yield and its component of NERICA4 .  Abstracts of Meeting of the CSSJ247 ( 0 )   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_71

  • Nakao Yoshihiro, Yoshino Minoru, Miyamoto Kisho, Kamioka Rieko, Sakagami Jun-Ichi .  Effects of hydro-priming on rice growth and yield of rain-fed upland rice .  Abstracts of Meeting of the CSSJ247 ( 0 )   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_123

  • sakagami junichi, komori kenta, nakao yoshihiro, Nurrahma Arinal Haq Izzawati, nagata taijiro, yabuta shin .  Can topping reduces injury of typhoon in sugarcane .  Abstracts of Meeting of the CSSJ247 ( 0 )   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_29

  • Tamaru Shotaro, Yabuta Shin, Sakagami Jun-Ichi .  The effect of leaf thickness on the correlation with chlorophyll content and SPAD value .  Abstracts of Meeting of the CSSJ248 ( 0 ) 115 - 115   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.248.0_115

  • Benyamin Lakitan, Hibiki Iwanaga, Kartika Kartika, Haris Kriswantoro, Jun-Ichi Sakagami. .  Adaptability to varying water levels and responsiveness to NPK fertilizer in yellow velvetleaf plant (Limnocharis flava) .  Australian Journal of Crop Science12   1757 - 1764   2018.12Adaptability to varying water levels and responsiveness to NPK fertilizer in yellow velvetleaf plant (Limnocharis flava)Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Benyamin Lakitan, Hibiki Iwanaga, Kartika Kartika, Haris Kriswantoro, Jun Ichi Sakagami .  Adaptability to varying water levels and responsiveness to NPK fertilizer in yellow velvetleaf plant (Limnocharis flava) .  Australian Journal of Crop Science12 ( 11 ) 1757 - 1764   2018.11

    　More details

    © 2018 Southern Cross Publishing-Australia. Yellow velvetleaf (Limnocharis flava (L.) Buchenau) is an edible plant commonly found at rice fields in tropical riparian wetlands. At present, young leaves and flower buds of L. flava are commonly gathered from rice field during off- growing season. This plant is rarely cultivated. Research was conducted for evaluating L. flava response to (1) different water regimes, i.e. flooding, water saturated soil, and shallow water table, for mirroring water behavior at riparian ecosystem; and (2) NPK application rates up to 6 g/plant. Pots used do not have bottom drainage hole; instead four side holes were drilled on each pot at height matching to water level treatments. Primary growth traits, leaf growth analysis, and chlorophyll concentration index were measured for evaluating adaptability of the velvetleaf plant to varying water levels and responsiveness to NPK fertilizer. Results of this research indicated that L. flava was well-adapted to all water regimes varied from 3 cm below to 3 cm above soil surface but it grew better under flooded condition at depth of 3 cm during vegetative growth stage. The L. flava positively responded to NPK fertilizer application at rate of 6.0 g/plant, both during vegetative and reproductive growth stages. Increase in leaf area was driven by leaf water content but the increase in leaf area was followed by decrease in specific leaf weight.

    DOI： 10.21475/ajcs.18.12.11.p1451

    Scopus

  • Masum, S.M., Hossain, M.A., Akamine, H. Hikaru Akamine, Jun-Ichi Sakagami, Takahiro Ishii, Toshihiro Konno, Ichiro Nakamura .  Study of Allelochemicals and Bispyribac-Sodium on the Germination and Growth Response of Echinochloa crus-galli L. .  Plant Growth Regul   2018.10Study of Allelochemicals and Bispyribac-Sodium on the Germination and Growth Response of Echinochloa crus-galli L. Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Constantine Busungu, Satoru Taura, Jun-Ichi Sakagami, Toyoaki Anai, Katsuyuki Ichitani .  High-resolution mapping and characterization of xa42, a resistance gene against multiple Xanthomonas oryzae pv. oryzae races in rice (Oryza sativa L.) .  Breed Sci.68   188 - 199   2018.9High-resolution mapping and characterization of xa42, a resistance gene against multiple Xanthomonas oryzae pv. oryzae races in rice (Oryza sativa L.)Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 坂上潤一 .  アフリカの稲作振興 アフリカ固有イネ栽培種Oryza glaberrima Steud.の遺伝資源的重要性 .  国際農林業協力41 ( 1 ) 11‐18 - 18   2018.6

    　More details

  • Constantine B., S. Taura, J-I. Sakagami, T. Anai, K. Ichitani .  High resolution mapping and characterization of a resistance gene against multiple pv. races in rice(L.) .  Breed Sci.68   188 - 199   2018.4 High resolution mapping and characterization of a resistance gene against multiple pv. races in rice(L.)Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Yoshihiro Nakao, Godfrey Asea, Yoshino Minoru, Kojima Nobuki, Hanada Hiroyuki, Miyamoto Kisho, Shin Yabuta, Kamioka Rieko, Sakagami Jun-Ichi .  Development of Hydropriming Techniques for Sowing Seeds of Upland Rice in Uganda .  American Journal of Plant Science9   2170 - 2182   2018.3Development of Hydropriming Techniques for Sowing Seeds of Upland Rice in UgandaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • S. M. Masum, M. A. Hossain, H. Akamine, J. I. Sakagami, T. Ishii, S. Gima, T. Kensaku, P. C. Bhowmik .  Isolation and characterization of allelopathic compounds from the indigenous rice variety ‘boterswar’ and their biological activity against Echinochloa crus-galli L .  Allelopathy Journal43 ( 1 ) 31   2018.1

    　More details

    Publisher：International Allelopathy Foundation  

    Aqueous methanol extracts of the Bangladesh indigenous rice (Oryza sativa L.ssp. indica) variety „Boterswar‟ inhibited the germination and seedling growth of Lepidium sativum L. and Echinochloa crus-galli L. Beauv which suggested that this variety may contain phytotoxic substance(s). Four biologically active compounds, syringaldehyde (4-hydroxy-3,5-dimethoxybenzaldehyde), (-) loliolide, 3β-hydroxy-5α,6α-epoxy-7-megastigmen-9-one and 3-hydroxy-β-ionone, were isolated from the ethyl acetate phase using several chromatographic steps. The chemical structures of the compounds were determined through electrospray ionization and spectroscopic analyses. The biological activity of these compounds showed that concentration &gt
    10 μM significantly inhibited the root and shoot growth of E. crus-galli seedlings, and the I50 (50% growth inhibition) values ranged from 16.03 to 27.23 μM and 23.94 to 75.49 μM for root and shoot growth, respectively. The four compounds synergistically suppressed the growth of E. crus-galli more strongly than the individual compounds. Thus, the indigenous rice „Boterswar‟ has potential use for weed management and this indigenous variety could be used to develop a new commercial rice variety that may suppress weeds.

    DOI： 10.26651/allelo.j./2018-43-1-1127

    Scopus

  • Constantine Busungu, Satoru Taura, Jun-Ichi Sakagami, Toyoaki Anai, Katsuyuki Ichitani .  High-resolution mapping and characterization of xa42, a resistance gene against multiple xanthomonas oryzae pv. Oryzae races in rice (oryza sativa l.) .  Breeding Science68 ( 2 ) 188 - 199   2018

    　More details

    Publisher：Japanese Society of Breeding  

    Improvement of resistance against rice bacterial blight (BB) disease is an important breeding strategy in breeding programs across the world, especially in Africa and southern Asia where BB is more prevalent. This report describes a high-resolution map and characterization of xa42 at XA42 locus, a rice BB resistance gene in XM14, a mutant line originating from IR24. The candidate gene region was narrowed down from 582 kb, which had been obtained in our previous study, to 57 kb. XM14 shows brown spots in its leaves like lesion mimic mutants. This line also shows a shorter stature than the original cultivar IR24. In XA42 gene segregating populations, homozygotes of xa42 allele were consistently resistant to the six Japanese Xanthomonas oryzae pv. oryzae races used for this study. They also showed brown spots and markedly short stature compared with the other genotypes, suggesting that xa42 gene exhibits pleiotropic effects.

    DOI： 10.1270/jsbbs.17094

    Web of Science

    Scopus

    PubMed

  • Nakao Yoshihiro, Yoshino Minoru, Kojima Nobuki, Hanada Hiroyuki, Miyamoto Kisho, Kamioka Rieko, Sakagami Jun-Ichi .  Best practice for farmers through development of hydro-priming techniques in rice seeds .  Abstracts of Meeting of the CSSJ245 ( 0 )   2018

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.245.0_96

  • Tsujimoto Y. .  The effect of sulfur fertilization on rice yields and nitrogen use efficiency in a floodplain ecosystem of northern Ghana .  Field Crops Research211   155 - 164   2017.9

    　More details

    Publisher：Field Crops Research  

    DOI： 10.1016/j.fcr.2017.06.030

    Scopus

  • Chiharu Sone, Jun-Ichi Sakagami .  Physiological mechanism of chlorophyll breakdown for leaves under complete submergence in rice .  Crop Science57   1 - 10   2017.8Physiological mechanism of chlorophyll breakdown for leaves under complete submergence in riceReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Yasuhiro Tsujimoto, Baba Inusah, Keisuke Katsura, Abraham Fuseini, Wilson Dogbe, Alhassan I. Zakaria, Yoichi Fujihara, Masato Oda, Jun-Ichi Sakagami .  The effect of sulfur fertilization on rice yields and nitrogen use efficiency in a floodplain ecosystem of northern Ghana .  Field Crops Research211   155 - 164   2017.6The effect of sulfur fertilization on rice yields and nitrogen use efficiency in a floodplain ecosystem of northern GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Arinal H. I. Nurrahma, Ahmad Junaedi1, Heni Purnamawati, Jun-Ichi Sakagami .  Rice Root Distribution of Four Rice Varieties to Different Depth of Submergence .  AGRIVITA Journal of Agricultural Science39   119 - 127   2017.3Rice Root Distribution of Four Rice Varieties to Different Depth of SubmergenceReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Keiichi HAYASHI, Yasuhiro TSUJIMOTO, Tamao HATTA,Yukiyo YAMAMOTO, Jun-Ichi SAKAGAMI, and Mathias FOSU .  Evaluating the Potential of Underdeveloped Land for Rice Production in Sub-Saharan Africa - A Case Study of Floodplains in the Northern Region of Ghana, West Africa .  JARQ 51   77 - 84   2017.3Evaluating the Potential of Underdeveloped Land for Rice Production in Sub-Saharan Africa - A Case Study of Floodplains in the Northern Region of Ghana, West AfricaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Yasuhiro Tsujimoto, Baba Inusah, Keisuke Katsura, Abraham Fuseini, Wilson Dogbe, Alhassan I. Zakaria, Yoichi Fujihara, Masato Oda, Jun-Ichi Sakagami .  The effect of sulfur fertilization on rice yields and nitrogen use efficiency in a floodplain ecosystem of northern Ghana .  Field Crops Reseach211   155 - 164   2017.2The effect of sulfur fertilization on rice yields and nitrogen use efficiency in a floodplain ecosystem of northern Ghana

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Hayashi K. .  Evaluating the potential of underdeveloped land for rice production in sub-saharan africa-a case study of floodplains in the Northern Region of Ghana, West Africa .  Japan Agricultural Research Quarterly51 ( 1 ) 77 - 84   2017

    　More details

    Publisher：Japan Agricultural Research Quarterly  

    DOI： 10.6090/jarq.51.77

    Scopus

  • Nurrahma A. .  Rice root distribution of four rice varieties to different depth of submergence .  Agrivita39 ( 2 ) 119 - 127   2017

    　More details

    Publisher：Agrivita  

    DOI： 10.17503/agrivita.v39i2.949

    Scopus

  • Symposium: From Asia to Africa, Whether the Green Revolution Caused ? .  Research for Tropical Agriculture10 ( 1 )   2017

    　More details

    Publisher：Japanese Society for Tropical Agriculture  

    DOI： 10.11248/nettai.10.18

  • SAKAGAMI Jun-Ichi .  From Asia to Africa, Whether the Green Revolution Caused .  Research for Tropical Agriculture10 ( 1 ) 36 - 38   2017

    　More details

    Publisher：Japanese Society for Tropical Agriculture  

    DOI： 10.11248/nettai.10.36

  • SHEIKH M. MASUM, MOHAMMAD AMZAD HOSSAIN, HIKARU AKAMINE,JUN-ICHI SAKAGAMI and PRASANTA C. BHOWMIK .  Allelopathic potential of indigenous Bangladeshi rice varieties .  Weed Biology and Management16   119 - 131   2016.12Allelopathic potential of indigenous Bangladeshi rice varietiesReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Katsura, K., Y. Tsujimoto, M. Oda, K. Matsushima, B. Inusah, W. Dogbe, J. Sakagami J. .  Genotype-by-environment interaction analysis of rice (Oryza spp.) yield in a floodplain ecosystem in West Africa .  Europium Journal of Agronomy73   152 - 159   2016.12Genotype-by-environment interaction analysis of rice (Oryza spp.) yield in a floodplain ecosystem in West AfricaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • rmawati, Hiroshi EHARA, Izumi KODAMA, Misato OSAWA, Rujito Agus SUWIGNYO, Ahmad JUNAEDI, Jun-Ichi SAKAGAMI .  Growth Characteristics of Two Indonesian Rice Cultivars under Several Submergence Durations .  Tropical Agriculture and Development60   40 - 47   2016.6Growth Characteristics of Two Indonesian Rice Cultivars under Several Submergence DurationsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Yusuke Adachi, Mei Sugiyama, Jun-Ichi Sakagami, Akari Fukuda, Masamichi Ohe, Hajime Watanabe .  Seed Germination and Coleoptile Growth of New Rice Lines Adapted to Hypoxic Conditions .  Plant Production Science18   471 - 475   2015.11Seed Germination and Coleoptile Growth of New Rice Lines Adapted to Hypoxic ConditionsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • S. El-Hendawy, C. Sone, O. Ito, J. I. Sakagami .  Traits associated with the escape strategy are responsible for flash flooding tolerance of rice during the emergence and seedling stages .  Cereal Research Communications43 ( 3 ) 525 - 536   2015.9Traits associated with the escape strategy are responsible for flash flooding tolerance of rice during the emergence and seedling stagesReviewed

    　More details

    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：AKADEMIAI KIADO RT  

    To identify the adaptive traits responsible for flooding tolerance during the initial growth stages of rice, dry seeds of 53 contrasting genotypes were sown in soil and watered normally (control) or submerged with 10 cm of water for 17 days. Subsequently, the plants were kept under normal rice cultivation conditions for a further 7 days. Cluster analysis showed that 53 genotypes were divided into three groups based on emergence date, percentage of plants reaching the water's surface, maximum coleoptile length, shoot elongation rate during submergence and increases in shoot dry weight after de-submergence. Twelve genotypes were placed in cluster 1 and characterized by fast emergence, rapid coleoptile elongation, and vigorous shoot growth under control and submergence conditions. The genotypes in cluster 1 attained also a higher increase in shoot dry weight at different time of submergence and de-submergence than the genotypes in clusters 2 and 3. A significant correlation was observed between the increase in shoot dry weight and traits related with fast and vigorous shoot elongation and coleoptile. In conclusion, flooding tolerance during initial growth stages were mainly due to major submergence avoidance or escape mechanisms, and crop establishment of direct-seeded rice in flood-prone areas is accomplished by harnessing reserves for fast shoot elongation.

    DOI： 10.1556/0806.43.2015.005

    Web of Science

    Scopus

  • Irmawati1, H. Ehara, R. A. Suwignyo and J. Sakagami .  Swamp rice cultivation in South Sumatra, Indonesia: an overview .  Tropical Agriculture and Development59   35 - 39   2015.3Swamp rice cultivation in South Sumatra, Indonesia: an overviewReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • SM Masum, MA Hossain, H Akamine, JI Sakagami, PC Bhowmik .  Allelopathic potential of indigenous Bangladeshi rice varieties .  Journal of Water Resource and Protection6   1316 - 1325   2015.3Allelopathic potential of indigenous Bangladeshi rice varietiesReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 松村 篤, 坂上 潤一 .  第8回アジア作物学会議の開催について .  日本作物學會紀事84 ( 2 ) 215 - 217   2015

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：日本作物学会  

    DOI： 10.1626/jcs.84.215

    CiNii Books

  • Yoichi Fujihara, Yukiyo Yamamoto, Yasuhiro Tsujimoto, Jun-Ichi Sakagami .  Discharge simulation in a data-scarce basin using reanalysis and global precipitation data: A case study of the White Volta basin .  Journal of Water Resource and Protection6 ( 14 ) 1316 - 1325   2014.10Discharge simulation in a data-scarce basin using reanalysis and global precipitation data: A case study of the White Volta basinReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 松島賢一、平野繁、名越時秀、坂上潤一、玉井富士雄 .  オオバコPlantago asiatica L.の刈取り後の地上部回復および水田畦畔における個体群維持要因の検討 .  雑草研究59 ( 1 ) 1 - 10   2014.3オオバコPlantago asiatica L.の刈取り後の地上部回復および水田畦畔における個体群維持要因の検討Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 森田弘彦, 内野彰, ABRAHAM Fuseini, TAHIRU Fulera, 坂上潤一 .  ガーナ共和国のサバンナ低湿地帯稲作圃場の土壌からの雑草とイネの出芽に及ぼす土壌水分の影響 .  雑草研究53rd   87   2014

    　More details

    Authorship：Corresponding author   Language：Japanese  

    J-GLOBAL

  • Matsushima Ken-ichi, Hirano Shigeru, Nagoshi Tokihide, Sakagami Jun-Ichi, Tamai Fujio .  The survival and recovery ability of <i>Plantago asiatica</i> L. after mowing at the paddy rice field levee .  Journal of Weed Science and Technology59 ( 1 ) 1 - 10   2014Reviewed

    　More details

    Language：Japanese   Publisher：The Weed Science Society of Japan  

    Vegetation survey and cultivation experiments were conducted to investigate recovery and survival ability of <i>Plantago asiatica</i> for shoot removal by mowing at the paddy rice field levees. At four paddy rice field levees in Atsugi, Kanagawa Pref., populations of <i>P.</i> <i>asiatica</i> were mainly comprised of overwintering plants. Plant density of <i>P. asiatica</i> was maintained almost less than 300/m<sup>2</sup> throughout year, however, temporally increased with seedling emergence from June to August. Prematured inflorescences were totally removed by each mowing during summer and seed shattering occurred after final mowing in November. Performance of un-cut plants which sowed in the previous September, following April and June were compared to the cut plants with cut in frequency of the paddy rice field levee. As results, overwintering plants sowed in the previous September developed a similar number of leaves to the un-cut plants. However, they slightly reduced their shoot and root dry matter weight compared to the un-cut plants. On the other hand, plants sowed in April and July markedly decreased their leaf number as well as dry weight of shoot and root in comparison with un-cut plants. In addition, though the plants sowed in the previous September were removed in next June, seeds in premature capsules of those plants exhibited high germination percentage (88%). It became clear that seed of <i>P. asiatica</i> could germinate before shattering and regrowth ability after shoot removal of overwintered plants were high. These factors are considered to confer on <i>P. asiatica</i> to persist in paddy field levees.

    DOI： 10.3719/weed.59.1

    CiNii Books

    J-GLOBAL

    Other Link： https://agriknowledge.affrc.go.jp/RN/2010872278

  • 坂上潤一・森田弘彦 .  西アフリカのサバンナ低湿地のイネ圃場に出現する雑草・植物の画像データベース .  日本農学図書館協議会誌 ( 172 ) 10 - 13   2013.12西アフリカのサバンナ低湿地のイネ圃場に出現する雑草・植物の画像データベース

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Y. Tsujimoto, Y. Yamamoto, K. Hayashi, A. I. Zakaria, Y. Inusah,T. Hatta, M. Fosu, J-I. Sakagami .  Topographic distribution of the soil total carbon content and sulfur　deficiency for rice cultivation in a floodplain ecosystem of northern Ghana .  Field Crops Research   2013.10Topographic distribution of the soil total carbon content and sulfur　deficiency for rice cultivation in a floodplain ecosystem of northern GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Yasuhiro Tsujimoto, Yukiyo Yamamoto, Keiichi Hayashi, Alhassan I. Zakaria, Yahaya Inusah, Tamao Hatta, Mathias Fosu, Jun-Ichi Sakagami .  Topographic distribution of the soil total carbon content and sulfur deficiency for rice cultivation in a floodplain ecosystem of the Northern region of Ghana .  FIELD CROPS RESEARCH152   74 - 82   2013.10Topographic distribution of the soil total carbon content and sulfur deficiency for rice cultivation in a floodplain ecosystem of the Northern region of GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCIENCE BV  

    An understanding of the spatial variation in soil fertility is fundamental for extending rice cultivation and developing appropriate management practices in currently under-utilized floodplain ecosystem of West Africa. The spatial patterns in the soil total carbon (TC) contents were analyzed using a Quickbird imagery, a global digital elevation model (ASTER-GDEM) and ArcView GIS functions for a White Volta floodplain of northern Ghana. An irrigated pot experiment was then conducted to relate rice biomass production to the spatial TC distribution and to identify deficient nutrients using different fertilizer treatments.The TC contents showed great variability (2.0-40.2 g kg(-1)) in a lognormal distribution, and the values were logarithmically increased with the proximity to reservoirs, consisting of a main river, back-swamps and ponds. The spatial pattern in the TC contents corresponded to the length of the waterlogging period during the rainy season, which was also logarithmically increased with the proximity to reservoirs, as estimated from the time-series satellite images. The corresponding patterns indicated that the spatio-temporal hydrological variable was a principal factor for the variance in the soil TC contents. Regarding the pot experiment, the amounts of soil mineralizable nitrogen were in accordance with the TC contents and correlated linearly with the plant N uptakes. However, dry matter production was scarcely relevant to the N-supplying capacity of the soils. Limited S concentrations in the plant tissues and a significant response to S application indicated that an inherent S deficiency restricted the dry matter production. NPK application without S increased only the N concentration and N:S concentration ratio in the plant tissues but not the biomass production.The high N-supplying capacity of the soil was related to the seasonal flooding, and the productive land areas for rice cultivation in both indigenous N and water availability were quantitatively predicted as a logarithmic function of the distance to reservoirs. Appropriate S supplementation would be required to utilize effectively the local N supply for rice biomass production in this under-utilized floodplain ecosystem. (C) 2012 Elsevier B.V. All rights reserved.

    DOI： 10.1016/j.fcr.2012.11.007

    Web of Science

    Scopus

  • Kamoshita, A., Sakagami, J., Fosu .  Improvement of resilience of crop production under waterlogged conditions in humid Asia and Africa for sustainable agricultural development .  Field Crops Research152   １ - ２   2013.9Improvement of resilience of crop production under waterlogged conditions in humid Asia and Africa for sustainable agricultural developmentInvited Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Ken-ichi Matsushima, Jun-Ichi Sakagami .  Effects of seed hydropriming on germination and seedling vigor during emergence of rice under different soil moisture conditions .  American Journal of Plant Sciences4   1584 - 1593   2013.8Effects of seed hydropriming on germination and seedling vigor during emergence of rice under different soil moisture conditionsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Oladele O.Idowu, Jun-Ichi Sakagami .  Ex-ante adoption of rice cultivation practices in Flood plains along Volta River in Northern Ghana .  Archives Des Sciences66 ( 5 ) 256 - 264   2013.5Ex-ante adoption of rice cultivation practices in Flood plains along Volta River in Northern GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 藤原洋一、山本由紀代、辻本泰弘、坂上潤一 .  再解析および全球降水量データセットを利用した観測不十分流域における長期流出解析 .  応用水文25   50 - 60   2013.1再解析および全球降水量データセットを利用した観測不十分流域における長期流出解析Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Yasuhiro Tsujimoto, Yukiyo Yamamoto, Keiichi Hayashi, Alhassan I. Zakaria, Yahaya Inusah,Tamao Hatta, Mathias Fosu, Jun-Ichi Sakagami .  Topographic distribution of the soil total carbon content and sulfur deficiency for rice cultivation in a floodplain ecosystem of northern Ghana .  Field Crops Research   2013.1Topographic distribution of the soil total carbon content and sulfur deficiency for rice cultivation in a floodplain ecosystem of northern GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Jun-Ichi Sakagami, Yukiko Joho, Chiharu Sone .  Complete submergence escape with shoot elongation ability by underwater photosynthesis in African rice, O. glaberrima Steud. .  Field Crops Research   2013.1Complete submergence escape with shoot elongation ability by underwater photosynthesis in African rice, O. glaberrima Steud.Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 坂上潤一、曽根千晴、松嶋賢一 .  アフリカの氾濫低湿地に適応したイネ品種の選抜と改良 .  熱帯農業研究5   167 - 169   2012.12アフリカの氾濫低湿地に適応したイネ品種の選抜と改良

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 森田弘彦、 内野彰、 Yahaya Inusah、 Alhassan I. Zakaria、辻本泰弘、坂上潤一 .  ガーナ低湿地イネ圃場での雑草相の特徴，雑草防除事例および主要雑草に対する除草剤の効果 .  熱帯農業研究5   162 - 166   2012.12ガーナ低湿地イネ圃場での雑草相の特徴，雑草防除事例および主要雑草に対する除草剤の効果Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 八田珠郎、大矢徹治、 辻本泰弘、林慶一、根本清子、 坂上潤一 .  ガーナ白ボルタ川の氾濫原周辺における土壌の鉱物・化学的性質 .  熱帯農業研究5   160 - 161   2012.12ガーナ白ボルタ川の氾濫原周辺における土壌の鉱物・化学的性質

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 山本由紀代、辻本泰弘、藤原洋一、坂上潤一 .  西アフリカの未利用低湿地における稲作面積拡大のための適地評価手法の開発 .  熱帯農業研究5   156 - 159   2012.12西アフリカの未利用低湿地における稲作面積拡大のための適地評価手法の開発

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 角田毅、 大矢徹治、 坂上潤一 .  アフリカ氾濫低湿地における稲作導入の実態と課題 .  熱帯農業研究5   153 - 155   2012.12アフリカ氾濫低湿地における稲作導入の実態と課題

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一 .  アフリカの低湿地における稲作の面的拡大の可能性と課題 .  熱帯農業研究5   152   2012.12アフリカの低湿地における稲作の面的拡大の可能性と課題

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • S.E. El-Hendawy, Y. Hu, C. Sone, O. Ito, J-I. Sakagami .  Differential growth response of rice genotypes with quiescence mechanism to flash flood .  Australian Journal of Crop Science6   1587 - 1597   2012.12Differential growth response of rice genotypes with quiescence mechanism to flash floodReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • T. Suzuki1, T. Ohta, Y. Izumi, L. Kanyomeka, O. Mwandemele, J-I. Sakagami, K. Yamane, M. Iijima .  Role of canopy coverage in water use efficiency especially in lowland rice in early growth period in semi-arid regions .  Plant Production Science16   12 - 23   2012.12Role of canopy coverage in water use efficiency especially in lowland rice in early growth period in semi-arid regionsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 坂上潤一 .  アフリカの地域資源環境を利用した持続的農業の開発 .  国際農林業協力35   3 - 9   2012.11アフリカの地域資源環境を利用した持続的農業の開発

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Y. Yamamoto, Y. Tsujimoto, Y. Fujihara, J-I. Sakagami, S. Ochi, M. Fosu .  Assessing the probability of land submergence for lowland rice cultivation in Africa using satellite imagery and geospatial data .  Environment, Development and Sustainability14   955 - 971   2012.6Assessing the probability of land submergence for lowland rice cultivation in Africa using satellite imagery and geospatial dataReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 坂上 潤一, 江原 宏, 本間 香貴, 国分 牧衛, 鴨下 顕彦 .  第7回アジア作物学会議の開催－課題と展望－ .  日本作物學會紀事81 ( 2 ) 221 - 222   2012第7回アジア作物学会議の開催－課題と展望－

    　More details

    Authorship：Corresponding author   Language：Japanese   Publisher：日本作物学会  

    DOI： 10.1626/jcs.81.221

  • SAKAGAMI Jun-Ichi .  Possibility and Problem for the Expansion of the Lowland Rice Cultivation Area in Africa .  Research for Tropical Agriculture5 ( 2 ) 152 - 152   2012Possibility and Problem for the Expansion of the Lowland Rice Cultivation Area in Africa

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：Japanese Society for Tropical Agriculture  

    DOI： 10.11248/nettai.5.152

  • Sakagami J-I, N. Kawano .  Survival of submerged rice in flood-prone region in West Africa .  TROPICS20   1 - 12   2011.12Survival of submerged rice in flood-prone region in West AfricaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Jun-Ichi Sakagami, Naoyoshi Kawano .  7. Survival of submerged rice in flood-prone region in West Africa .  TROPICS20   55 - 65   2011.127. Survival of submerged rice in flood-prone region in West AfricaReviewed

    　More details

    Authorship：Lead author,　Corresponding author  

    DOI： 10.3759/tropics.20.55

  • Sakagami J-I. .  Lowland rice environment and potential in West Africa .  Proceedings in JIRCAS International Symposium-Trends of international rice research and Japanese contribution support to GRiSP and CARD   114 - 121   2011.11Lowland rice environment and potential in West Africa

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • SUMITA Tsuyoshi, SAKAGAMI Jun-ichi, ANDO Masuo, YAHAYAH Inusah .  The Economy of Rice Production and Its Limiting Factor in Ghana .  Journal of Rural Problems47 ( 2 ) 308 - 312   2011.9Reviewed

    　More details

    Language：Japanese   Publisher：The Association for Regional Agricultural and Forestry Economics  

    In Africa, the consumption of rice has been increasing rapidly in recent years, but the self-sufficiency ratio remains low. This paper attempted to investigate the profitability of rice and its limiting factor to expansion in the northern part of Ghana.<br>The results show that farmers were highly motivated to participate in rice production, as rice can be converted into money as a cash crop. However, several problems, including the shortage of fundsfor materials, charge for use of tractors, unreliable tractor operation, labor shortage, and conflicts with other plantations, were hindering rice development in the lowlands. A cost analysis showed that the cost of using tractors accounted for almost 60% of the total cash expenditure in rice production. Therefore, the invention of low-input cultivation technology in accordance with the local environment is required for the promotion of rice cultivation.

    DOI： 10.7310/arfe.47.308

    CiNii Books

    J-GLOBAL

    Other Link： https://agriknowledge.affrc.go.jp/RN/2010815233

  • 角田毅、坂上潤一、安藤夫 .  ガーナにおける稲作の経済性と制約要因 .  農林業問題研究189   138 - 142   2011.9ガーナにおける稲作の経済性と制約要因Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • C. Sone, O. Ito, J-I. Sakagami .  Characterizing submergence survival strategy in rice via chlorophyll fluorescence .  Journal of Agronomy and Crop Science198   152 - 160   2011.8Characterizing submergence survival strategy in rice via chlorophyll fluorescenceReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • SE. Hendawy, Y. Hu, J.I. Sakagami, U. Schmidhalter .  Screening Egyptian wheat genotypes for salt tolerance at early growth stage .  International Journal of Plant Production198   152 - 160   2011.7Screening Egyptian wheat genotypes for salt tolerance at early growth stageReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • SE. Hendawy, C. Sone, O. Ito, J-I. Sakagami .  Evaluation of germination ability in rice seeds under anaerobic conditions by cluster analysis .  Research Journal of Seed Science4   82 - 93   2011.5Evaluation of germination ability in rice seeds under anaerobic conditions by cluster analysisReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Sakagami J-I., Sone C., Kawano N. .  Submergence escape in Oryza glaberrima Steud. in Africa .  Proceedings of 7th Asian Crop Science Association Conference   24 - 28   2011.2Submergence escape in Oryza glaberrima Steud. in AfricaReviewed

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • 八田珠郎、坂上潤一、大矢徹冶 .  ガーナにおける野外調査 .  食品と容器52   56 - 60   2011.1ガーナにおける野外調査

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一 .  アフリカ稲作開発における雑草研究への期待 .  雑草研究56   24   2011

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese  

    DOI： 10.3719/weed.56.24

    J-GLOBAL

  • 坂上潤一 .  西アフリカサバンナ低湿地における雑草データベースの構築 .  国際農林水産業研究成果情報 ( 18 ) 43 - 44   2011

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese  

    J-GLOBAL

  • 森田弘彦, 内野彰, INUSAH Yahaya, ZAKARIA Alhassan, 坂上潤一 .  ガーナ共和国のサバンナ低湿地稲作における雑草群落の種構成 .  雑草研究56   26   2011

    　More details

    Language：Japanese  

    J-GLOBAL

  • 八田 珠郎, 坂上 潤一, 大矢 徹治 .  ガーナにおける野外調査 (海外事情) .  食品と容器52 ( 1 ) 56 - 60   2011

    　More details

    Language：Japanese   Publisher：缶詰技術研究会  

    CiNii Books

  • SE-Hendawy, W. Shaban, J-I. Sakagami. .  Does treating faba bean seeds with chemical inducers simultaneously chocolate spot disease resistance and yield under field condition? .  Turkish Journal of Agriculture and Forestry34   475 - 485   2010.12Does treating faba bean seeds with chemical inducers simultaneously chocolate spot disease resistance and yield under field condition?Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Morita H., Uchino A., Inusah Y., Sakagami J-I. .  Weed flora of rice fields in the lowland savanna of Ghana .  Proceedings of 3rd International Rice Congress   1 - 7   2010.11Weed flora of rice fields in the lowland savanna of GhanaReviewed

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • 坂上潤一 .  アフリカにおける低湿地水田研究によるコメ生産倍増への期待 .  Techno Innovation76   53 - 55   2010.9アフリカにおける低湿地水田研究によるコメ生産倍増への期待

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一、中園幹生、島村聡、伊藤治、石澤公明 .  湿地環境と作物-環境と調和した作物生産をめざして- .  養賢堂   1 - 264   2010.2湿地環境と作物-環境と調和した作物生産をめざして-Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (other academic)  

  • 坂上潤一 .  アフリカイネ(Oryza glaberrima)の中には長期完全冠水において地上部を伸長させ成長できるものがある .  国際農林水産業研究成果情報 ( 17 ) 29 - 30   2010

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese  

    J-GLOBAL

  • 坂上 潤一 .  海外情報レポート アフリカにおける低湿地水田稲作研究によるコメ生産倍増への期待 .  Techno innovation20 ( 2 ) 53 - 55   2010

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：農林水産先端技術産業振興センター  

    CiNii Books

  • S. K. Awala, P. I. Nanhapo, J-I. Sakagami, L. Kanyomeka, M. Iijima .  Differential salinity tolerance among Oryza glaberrima, Oryza sativa and their interspecies including Nerica .  Plant Production Science13   3 - 10   2009.12Differential salinity tolerance among Oryza glaberrima, Oryza sativa and their interspecies including NericaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Sakagami J-I., Joho Y., Ito O. .  Contrasting physiological responses by cultivars of Oryza sativa and O. glaberrima to prolonged submergence .  Annals of Botany103   171 - 180   2009.1Contrasting physiological responses by cultivars of Oryza sativa and O. glaberrima to prolonged submergenceReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Kawano N, Ito O, Sakagami J-I .  Morphological and physiological responses of rice seedlings to complete submergence .  Annals of Botany103   161 - 169   2009.1Morphological and physiological responses of rice seedlings to complete submergenceReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Joho Y, Omsasa K, Kawano N, Sakagami J-I. .  Growth responses of seedlings in Oryza glaberrima Steud. to short-term submergence in Guinea, West Africa .  Japan Agricultural Research Quarterly41   157 - 162   2008.7Growth responses of seedlings in Oryza glaberrima Steud. to short-term submergence in Guinea, West AfricaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Kawano N, Ito O, Sakagami J-I. .  Relationship between shoot elongation and dry matter weight during submergence in Oyza sativa L. and O. glaberrima Steud. rice cultivars .  Plant Production Science11   316 - 323   2008.7Relationship between shoot elongation and dry matter weight during submergence in Oyza sativa L. and O. glaberrima Steud. rice cultivarsReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Kawano N, Ito O, Sakagami J-I. .  Flash flooding resistance of rice genotypes of Oryza sativa L., O. glaberrima Steud. and Interspecific hybridization progeny .  Environmental and Experimental Botany63   9 - 18   2008.5Flash flooding resistance of rice genotypes of Oryza sativa L., O. glaberrima Steud. and Interspecific hybridization progenyReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 坂上潤一、八田珠郎、上堂薗明、増永二之、梅本貴之、内田諭 .  ニジェール河内陸デルタ地帯における氾濫原伝統的稲作の実態 .  アフリカにおける稲作最前線・国際農業研究情報57   37 - 52   2008.3ニジェール河内陸デルタ地帯における氾濫原伝統的稲作の実態Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一、伊藤治 .  アフリカにおける稲作最前線 .  国際農業研究情報・国際農林水産業研究センター   1 - 174   2008.3アフリカにおける稲作最前線Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (other academic)  

  • 西山範之、坂上潤一 .  ブルキナファソにおける稲作の現状と発展性 .  アフリカにおける稲作最前線,・国際農業研究情報57   136 - 142   2008.3ブルキナファソにおける稲作の現状と発展性Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 河野尚由、坂上潤一 .  西アフリカにおけるイネの冠水害 .  アフリカにおける稲作最前線・ 国際農業研究情報57   25 - 36   2008.3西アフリカにおけるイネの冠水害Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 石澤 公明, 坂上 潤一, 伊藤 治 .  植物の根に関する諸問題(175)植物の嫌気応答に関する国際会議(ISPA)開催報告 .  農業および園芸83 ( 3 ) 387 - 393   2008.3

    　More details

    Language：Japanese   Publisher：養賢堂  

    CiNii Books

  • 坂上潤一 .  アフリカイネ,アジアイネおよび種間雑種の短期冠水耐性 .  国際農林水産業研究成果情報 ( 15 ) 9 - 10   2008

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese  

    J-GLOBAL

  • J-I. Sakagami, Y. Joho, A. Cisse, T. Gueye, S. Gueye, N’K. Doubouya, M. S. Sandake, N. Kawano .  Collaborative Exploration of African rice, Oryza glaberrima Steud., in Senegal and Guinea 2006 .  植探報23   109 - 123   2006.12Collaborative Exploration of African rice, Oryza glaberrima Steud., in Senegal and Guinea 2006

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • J-I Sakagami, Cisse, A, Ito O., Kawano N. .  Physiological responses of shoot-related traits on water stress of cultivated species of Oryza sativa L., O. glaberrima Steud. and NERICA .  Beyond the first generation NERICA in Africa・WARDA   121 - 131   2006.10Physiological responses of shoot-related traits on water stress of cultivated species of Oryza sativa L., O. glaberrima Steud. and NERICAReviewed

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • Y. Joho, K. Omasa, J-I. Sakagami .  Agronomic features of Oryza glaberrima under flooding conditions .  Beyond the first generation NERICA in Africa・WARDA   73 - 78   2006.10Agronomic features of Oryza glaberrima under flooding conditionsReviewed

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • N. Kawano, O. Ito, J-I. Sakagami .  Physiological strategy of young rice seedlings for flash floods. .  Beyond the first generation NERICA in Africa・WARDA   79 - 85   2006.10Physiological strategy of young rice seedlings for flash floods.Reviewed

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • Oladele, O.I., J. Sakagami, K. Toriyama .  Research-extension-farmer linkage system in southwestern Nigeria .  Journa of Food, Agriculture & Environment4   197 - 200   2006.1Research-extension-farmer linkage system in southwestern NigeriaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • K B D P Samarajeewa, Kojima N. and Sakagami J-I., W.A. Chandanie .  The effect of different timing of top dressing of nitrogen application under low light intensity on the yield of rice (O. sativa L.) .  Journal of Agronomy and Crop Science191   99 - 105   2005.4The effect of different timing of top dressing of nitrogen application under low light intensity on the yield of rice (O. sativa L.)Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Oladele O I., Sakagami J., Koyama O. .  Economic policies and the performance of agricultural extension services in Nigeria 1986 - 2002 .  Journal of Extension Systems20   89 - 95   2004.12Economic policies and the performance of agricultural extension services in Nigeria 1986 - 2002Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Oladele, O., J. Sakagami .  Agricultural research and extension indices as determinants of agricultural growth in Nigeria:1981-2002 .  Journal of Agriculture and Environment for International Development98   19 - 27   2004.7Agricultural research and extension indices as determinants of agricultural growth in Nigeria:1981-2002Reviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Tobita S., Sakagami J-I. .  New Rice for Africa .  Farming Japan38   35 - 40   2004.7New Rice for Africa

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • Oladele, O., J. Sakagami .  SWOT analysis of extension systems in Asian and West African .  Journal of Food, Agriculture & Environment2   232 - 236   2004.4SWOT analysis of extension systems in Asian and West AfricanReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • 八田珠朗、小口千明、根本清子、坂上潤一 .  地球表層環境条件における粘土層の役割 .  粘土科学43   116 - 119   2004.3地球表層環境条件における粘土層の役割Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一、 高木洋子 .  アフリカ半乾燥地域における農業特性 .  国際農業研究情報・国際農林水産業研究センター34   1 - 122   2004.3アフリカ半乾燥地域における農業特性Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (other academic)  

  • J-I. Sakagami, H. Tsunematsu .  Challenge for Improvement of Rice Productivity through Physio-Genetic Research in West Africa .  JICA International Seminar on Promotion of Rice Production and Dissemination in Africa4   165 - 168   2004.3Challenge for Improvement of Rice Productivity through Physio-Genetic Research in West Africa

    　More details

    Language：English   Publishing type：Research paper (international conference proceedings)  

  • Oladele O.I., Koyama O., Sakagami J.I. .  Africa in search of extension system: Experience from Nigeria .  Journal of Food, Agriculture & Environment2   276 - 280   2004.1Africa in search of extension system: Experience from NigeriaReviewed

    　More details

    Language：English   Publishing type：Research paper (scientific journal)  

  • HATTA Tamao, OGUCHI Chiaki T., NEMOTO Seiko, SAKAGAMI Jun-Ichi .  The Role of Claysphere under the Environmental Condition on the Earth's Surface-An Example of the Formation of Organo-Clay Complexes in Tropical Semi-Arid Land-:An Example of the Formation of Organo-Clay Complexes in Tropical Semi-Arid Land .  Journal of the Clay Science Society of Japan (in Japanese)43 ( 3 ) 116 - 119   2004Reviewed

    　More details

    Language：Japanese   Publisher：The Clay Science Society of Japan  

    The low soil fertility in semi-arid land requires effective soil improvement measures. To elucidate a possible relationship between dominant minerals and organic materials that improves soil fertility in semi-arid land, several experiments is carried out using kaolinite and urea. The reaction rate of urea-kaolinite complex is determined using XPS and XRD. It is confirmed that the intercalated urea is easily released from the structure of urea-kaolinite complex after dissolution experiments. Soil-forming minerals and native organic polymer compounds which contain nitrogen distributes in semi-arid soil. We will carry out a study at semi-arid land whether complexes will be able to support more efficient agricultural productivity and to determine the applicability of the results obtained to low-fertility areas.

    DOI： 10.11362/jcssjnendokagaku1961.43.116

    CiNii Books

    J-GLOBAL

  • 坂上潤一 .  ネリカ稲の研究開発と問題点 .  アフリカレポート37   3 - 9   2003.9ネリカ稲の研究開発と問題点Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 三浦喜美男, 吉田亮介, 小長谷裕宝, 坂上潤一 .  西アフリカ諸国のコメ生産と稲作技術協力の成果 海外技術研修員の受け入れの見地から .  農業技術55 ( 4 ) 187 - 194   2000

    　More details

    Language：Japanese  

    J-GLOBAL

  • 坂上潤一、礒田昭弘、野島博、高崎康夫 .  アジアイネ（Oryza sativa L.）とアフリカイネ（O. glaberrima Steud.)の一年生・多年生の特性とその変異 .  日本作物学会紀事68   524 - 530   1999.12アジアイネ（Oryza sativa L.）とアフリカイネ（O. glaberrima Steud.)の一年生・多年生の特性とその変異Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Perenniality and annuality of O. sativa L. and O. glaberrima Steud. in Genus Oryza. .      1999.9Perenniality and annuality of O. sativa L. and O. glaberrima Steud. in Genus Oryza.

    　More details

    Language：Japanese   Publishing type：Doctoral thesis  

  • 坂上潤一、礒田昭弘、野島博、高崎康夫 .  Oryza sativa L.とOryza glaberrima Steud.の成熟後の生育と生存 .  日本作物学会紀事68   524 - 530   1999.6Oryza sativa L.とOryza glaberrima Steud.の成熟後の生育と生存Reviewed

    　More details

    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • 坂上潤一 .  Present state and varieties of traditional rice farming in Niger. .  農業および園芸70 ( 4 ) p462 - 468   1995.4Reviewed

    　More details

    Authorship：Lead author,　Corresponding author   Language：Japanese   Publisher：養賢堂  

    CiNii Books

    J-GLOBAL

▼display all

Books

  • 国内外におけるキャッサバ生産とその諸問題

    坂上潤一・北原兼文・ 田丸翔太朗（ Role： Joint author）

    農業畜産振興機構  2020.12 

    　More details

    Total pages：8   Responsible for pages：51-55   Language：Japanese Book type：Textbook, survey, introduction

    地球温暖化にあって、南九州においては、長期の気温上昇によって将来的に熱帯化の可能性が十分に考えられることから、熱帯原産作物の適応性を明らかにして、地域資源化に取り組むことは重要である。また、近年は食の多様化が進み、料理のバリエーションが豊富になってきており、国内においてもさまざまな熱帯作物を材料にした食材が活用されている。近年ブームとなっているタピオカドリンクはその一例である。タピオカドリンクに含まれる粒状のタピオカパールは、熱帯原産のキャッサバ（Manihotesculenta Crantz）の生産物をでん粉に加工した原料（タピオカでん粉）から製造したものである。キャッサバは、キントラノオ目トウダイグサ科イモノキ属の多年性低木であり、現在は世界中の熱帯お よび亜熱帯地域で広く栽培され、世界５億もの人々の主要な食料となっている１）。マニオク、マンジョカ、カサーバとも呼ばれている。キャッサバは高温や乾燥に強く、酸性土壌や低肥ひ 沃よく土壌でも生育可能であることから、将来的に地球温暖化や食料問題の解決に大きく貢献する作物として注目され、FAO（Food Agriculture Organization）において「21世紀の作物」と評されるなど、世界的な期待が高まっている。キャッサバの用途は、食用、飼料用の他、工業用でん粉や、バイオマス燃料の原料など多岐にわたる。キャッサバには複数の原産地があることを示す研究結果がある一方で、栽培種はブラジルのアマゾンの南端地域に由来することを唆する報告もある２）。栽培化は約1万年前とされており、最も古くから栽培されている作物の一つである１）。日本に おけるタピオカパールは輸入品で、タピオカでん粉も輸入品だが、安全・安心、高品質に対する消費者の関心に対応した、国内産キャッサバは一定の需要が見込める。また、SDGs（持続可能な開発目標）を実現させていくためにも、環境と調和したキャッサバ栽培が実施できれば温室効果ガス削減などに効果があり、キャッサバ加工品の普及は、観光資源としても有望であることは間違いない。

    Other Link： https://www.alic.go.jp/content/001184632.pdf

  • 熱帯農学概論

    坂上潤一（ Role： Joint author）

    培風館  2019.1 

    　More details

    Language：Japanese Book type：Scholarly book

  • Tropical Agriculture

    SAKAGAMI Junichi（Rice cultivation in Africa）

    2019.1 

  • 国際農林業協力

    坂上潤一（ Role： Sole author）

    国際農林業協力協働協会  2018.4 

    　More details

    Language：Japanese

  • Submergence tolerance in Oryza glaberrima Steudel

    J-I. Sakagami.（ Role： Sole author）

    Applied Photosynthetic・INTECH publisher  2012.3 

    　More details

    Language：English Book type：Scholarly book

  • 第7回アジア作物学会議の開催-課題と展望-

    坂上潤一、江原宏、本間香貴、国分牧衛、鴨下顕彦（ Role： Joint author）

    日本作物学会紀事  2012.3 

    　More details

    Language：Japanese Book type：Report

  • Applied Photosynthetic

    SAKAGAMI Junichi（ Role： Joint author ,  Submergence tolerance in Oryza glaberrima Steudel）

    Applied Photosynthetic  2012.3 

  • Saving water in arid and semi-arid countries as a result of application of crop evapotranspiration

    SE.Hendawy, M. Alboghdady, J-I. Sakagami, U. Schmidhalter（ Role： Joint author）

    Evapotranspiration・INTECH publisher  2011.11 

    　More details

    Language：English Book type：Scholarly book

  • Evapotranspiration

    SE.Hendawy, M. Alboghdady, J-I. Sakagami, U. Schmidhalter（ Role： Joint author ,  Saving water in arid and semi-arid countries as a result of application of crop evapotranspiration）

    INTECH publisher  2011.11 

  • Plants in lowland savanna of West Africa. 1st edition

    Morita,H, A,Uchino,.Y. Inusah, J.I. Sakagami（ Role： Joint author）

    JIRCAS  2011.6 

    　More details

    Language：English Book type：Scholarly book

  • 防水加工したクロロフィル蛍光計はイネの冠水抵抗性の評価に有効である

    曽根千晴、坂上潤一（ Role： Joint author）

    麦・大豆栽培における湿害の現実と研究展開・農研機構  2011.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカにおける洪水を活用した新稲作技術の開発

    坂上潤一（ Role： Sole author）

    「麦・大豆栽培における湿害の現実と研究展開」・農研機構  2011.3 

    　More details

    Language：Japanese Book type：Report

  • 冠水抵抗性イネの開発と課題

    河野尚由、坂上潤一（ Role： Joint author）

    湿地環境と作物・養賢堂  2010.2 

    　More details

    Language：Japanese Book type：Scholarly book

  • アフリカ地域における洪水を利用した低湿地氾濫原稲作

    坂上潤一（ Role： Sole author）

    湿地環境と作物・養賢堂  2010.2 

    　More details

    Language：Japanese Book type：Scholarly book

  • 作物の冠水害・湿害、イネ

    望月俊宏、坂上潤一（ Role： Joint author）

    湿地環境と作物・養賢堂  2010.2 

    　More details

    Language：Japanese Book type：Scholarly book

  • イネの冠水抵抗性と生存戦略

    坂上潤一、 望月俊宏、渡辺肇（ Role： Joint author）

    湿地環境と作物・養賢堂  2010.2 

    　More details

    Language：Japanese Book type：Scholarly book

  • Wet environment and crop

    SAKAGAMI Junichi（ Role： Edit）

    yokendo  2010.2 

  • アフリカの稲作

    坂上潤一（ Role： Sole author）

    農業技術「作物編」・農文協  2009.2 

    　More details

    Language：Japanese Book type：Scholarly book

  • Advanced Agricultural Technologies, Crop

    SAKAGAMI Junichi（ Role： Joint author ,  Rice cultivation in Africa）

    2009.2 

  • 根の諸問題[175]-植物の嫌気応答に関する国際会議（ISPA）開催報告―

    石澤公明、坂上潤一、伊藤 治、櫻井武司、阿部 淳、塩野克宏、中園幹生、望月俊宏、高橋秀幸、渡邊 肇、吉岡俊人、間野吉郎、島村 聡、小柳敦史（ Role： Joint author）

    農業および園芸  2008.2 

    　More details

    Language：Japanese Book type：Report

  • アフリカ対象地域別問題

    坂上潤一、鳥山和伸（ Role： Joint author）

    農林水産業分野の国際共同研究戦略・国際農林水産業研究センター  2005.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカにおける新品種“ネリカ”の開発問題

    坂上潤一（ Role： Sole author）

    アフリカの農業農村開発・農業土木学会  2004.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカにおける灌漑農業

    坂上潤一（ Role： Sole author）

    21世紀の国際共同研究戦略の構築・国際農林水産業研究センター  2004.3 

    　More details

    Language：Japanese Book type：Report

  • バイオテクノロジーを利用した作物育種法の開発

    常松浩史、坂上潤一（ Role： Joint author）

    21世紀の国際共同研究戦略の構築・国際農林水産業研究センター  2004.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカにおける稲作協力

    坂上潤一（ Role： Sole author）

    開発途上国における日本の稲作協力～稲作研修のあり方を考える～」・国際協力機構  2003.12 

    　More details

    Language：Japanese Book type：Report

  • アフリカ地域別戦略

    坂上潤一（ Role： Sole author）

    21世紀の国際共同研究戦略の構築・国際農林水産業研究センター  2003.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカの農業技術開発の課題(国際戦略セミナーの記録）

    坂上潤一（ Role： Sole author）

    21世紀の国際共同研究戦略の構築・国際農林水産業研究センター  2003.3 

    　More details

    Language：Japanese Book type：Report

  • アフリカの農業技術開発の課題

    坂上潤一（ Role： Sole author）

    農林水産業の持続的発展と国際共同研究の役割・国際農林水産業研究センター  2003.1 

    　More details

    Language：Japanese Book type：Report

  • フランスの稲作と稲研究

    坂上潤一（ Role： Sole author）

    農業技術  2001.5 

    　More details

    Language：Japanese Book type：Scholarly book

  • 西アフリカ諸国におけるコメ生産と稲作技術協力の成果

    三浦喜美男、吉田亮介、小長谷裕宝、坂上潤一（ Role： Joint author）

    農業技術  1999.9 

    　More details

    Language：Japanese Book type：Scholarly book

  • ニジェールの伝統的稲作と品種

    坂上潤一（ Role： Sole author）

    農業及び園芸  1995.4 

    　More details

    Language：Japanese Book type：Scholarly book

▼display all

MISC

  • Root plasticity of NERICA1 and NERICA4 under rainfed condition.

    畠中京介, 籔田伸, 坂上潤一

    熱帯農業研究   13 ( Extra Issue 1 )   2020

    　More details

  • Responses of Chili Pepper (Capsicum chinense) under Continuous Soil Water Status.

    後藤啓太, 薮田伸, 坂上潤一, 坂上潤一

    熱帯農業研究   13 ( Extra Issue 1 )   2020

    　More details

  • Effects of nitrogen application after heading on nitrogen distribution and dry matter production of stay green rice

    藪田伸, 中尾祥宏, NURRAHMA Arinal H.I., KHANTHAVONG Phanthasin, 坂上潤一, 坂上潤一

    日本作物学会講演会要旨集   249th   2020

    　More details

  • Anaerobic response of lysigenous serenchyma and size of tissue in rice seminal root

    田丸翔太郎, 薮田伸, 坂上潤一, 坂上潤一

    日本作物学会講演会要旨集   249th   2020

    　More details

  • Effects of rice seed hydro-priming on yield of rainfed upland rice

    中尾祥宏, 吉野稔, 宮本輝尚, 上岡莉枝子, 畠中京介, 坂上潤一

    日本作物学会講演会要旨集   249th   2020

    　More details

  • Environmental adaptability of primed seed under the dry soil moisture condition

    中尾祥宏, 坂上潤一

    熱帯農業研究   13 ( Extra Issue 1 )   2020

    　More details

  • 国内外におけるキャッサバ生産とその諸問題

    坂上潤一, 北原兼文, 田丸翔太朗

    砂糖類・でん粉情報   ( 99 )   2020

    　More details

  • Morpho‐physiological response of flooding stress at different growth stages of Common Buckwheat (Fagopyrum esculentum)

    CHOI Ju‐Young, NURRAHMA Arinal H. I, IWATA Yukiko, NAKAO Yoshihiro, YABUTA Shin, ROY Swapan Kumar, KWON Soo‐Jeong, WOO Sun‐Hee, SAKAGAMI Jun‐ichi

    日本作物学会講演会要旨集   247th   52   2019.3

    　More details

  • Photosynthetic rates of rice with contrast mechanism during complete submergence followed by reaeration condition

    NURRAHMA Arinal H. I, YABUTA Shin, JUNAEDI Ahmad, SAKAGAMI Jun‐ichi

    日本作物学会講演会要旨集   247th   30   2019.3

    　More details

  • Isolation and molecular characterization of phosphate solubilizing filamentous fungi from subtropical soils in Okinawa

    M. K. Islam, A. Sano, M. S.I. Majumder, M. A. Hossain, J. I. Sakagami

    Applied Ecology and Environmental Research   17 ( 4 )   9145 - 9157   2019.1

    　More details

    © 2019, ALÖKI Kft., Budapest, Hungary. Phosphorus (P) is an essential nutrient element required for plant growth and development. Low phosphorus availability in soil is one of the major constrains for crop production. Phosphate solubilizing fungi enhance available phosphorous released from soils and contribute to fulfill the plants phosphorous requirement. This study aimed to isolate and identify potential phosphate solubilizing fungi from subtropical soils for environment friendly biofertilizer development. Sixteen fungal strains were isolated and identified as Aspergillus spp., Penicillium spp. and Talaromyces spp. from subtropical dark red soil, red soil and grey soil based on phosphate solubilization index, morphological studies and the sequences of β-tubulin and/or Calmodulin. Subsequently, fungal isolates having excellent phosphate solubilization efficiency were selected by their potential in broth containing insoluble Ca3 (PO4)2, AlPO4 and FePO4. Interestingly, Aspergillus niger isolates (strain SI-10URAgr, SI-11URAgr and SI-12URAgr) have marked phosphate solubilization ability regardless of the substrates followed by Panicillium oxalicum and Talaromyces pinophilus. In addition, there was inverse proportion between the pH and phosphate solubilizing capacities. These excellent properties of strains suggested that they have a great potential for agricultural utilization as environmentally sound biofertilizer. In this study, phosphate solubilization by filamentous fungi is reported for the first-time in subtropical Okinawa.

    DOI： 10.15666/aeer/1704_91459157

    Scopus

  • ひこばえを利用した高収量稲作栽培体系の評価

    岩永響希, 藪田伸, 坂上潤一

    熱帯農業研究   12 ( Extra Issue 1 )   2019

    　More details

  • Effect on the Change of Green Leaf Area at Ripening period on Yield and its component of NERICA4

    Yabuta Shin, Nakao Yoshihiro, Nurrahma Arinal H.I., Sakagami Jun-Ichi

    Abstracts of Meeting of the CSSJ   247th ( 0 )   71 - 71   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_71

    J-GLOBAL

  • 湛水条件下におけるサトウキビの根の形態的変化

    坂上潤一, 岩田晋子, 岩永響希, 中尾祥宏, 藪田伸

    熱帯農業研究   12 ( Extra Issue 1 )   2019

    　More details

  • 完全冠水下におけるイネの根の通気組織及び酸素漏出バリアの形成

    岩田晋子, 中園幹生, 薮田伸, 坂上潤一

    熱帯農業研究   12 ( Extra Issue 1 )   2019

    　More details

  • Effects of hydro-priming on rice growth and yield of rain-fed upland rice

    Nakao Yoshihiro, Yoshino Minoru, Miyamoto Kisho, Kamioka Rieko, Sakagami Jun-Ichi

    Abstracts of Meeting of the CSSJ   247th ( 0 )   123 - 123   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_123

    J-GLOBAL

  • Can topping reduces injury of typhoon in sugarcane

    sakagami junichi, komori kenta, nakao yoshihiro, Nurrahma Arinal Haq Izzawati, nagata taijiro, yabuta shin

    Abstracts of Meeting of the CSSJ   247th ( 0 )   29 - 29   2019

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.247.0_29

    J-GLOBAL

  • キャッサバの葉の厚さがクロロフィル含量とSPAD値の相関性に及ぼす影響

    田丸翔太郎, 籔田伸, 坂上潤一

    日本作物学会講演会要旨集   248th   2019

    　More details

  • イネの天水直播栽培における,プライミング種子利用リスクの検討

    中尾祥宏, 坂上潤一

    熱帯農業研究   12 ( Extra Issue 1 )   2019

    　More details

  • ウガンダにおける高収量品種NERICA4の生育特性

    松本健資, 吉野稔, 小島伸幾, 宮本輝尚, 坂上潤一

    熱帯農業研究   11 ( Extra Issue 1 )   2018

    　More details

  • Best practice for farmers through development of hydro-priming techniques in rice seeds

    Nakao Yoshihiro, Yoshino Minoru, Kojima Nobuki, Hanada Hiroyuki, Miyamoto Kisho, Kamioka Rieko, Sakagami Jun-Ichi

    Abstracts of Meeting of the CSSJ   245th ( 0 )   96 - 96   2018

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.245.0_96

    J-GLOBAL

  • ベトナムにおけるトウガラシの探索,収集および評価

    小森健太, QUOC Trung, NGUYEN Minh, PHAM Van Cuong, 坂上潤一

    熱帯農業研究   11 ( Extra Issue 1 )   2018

    　More details

  • トウガラシ果実の辛み成分含量の種間経時的変化

    小森健太, 加治屋勝子, 坂上潤一

    熱帯農業研究   11 ( Extra Issue 1 )   2018

    　More details

  • サトウキビの梢頭部切除処理は台風による倒伏被害軽減に有効である

    飯笹さやか, 西原悟, 長田泰二朗, 佐藤光徳, 薮田伸, 坂上潤一

    熱帯農業研究   11 ( Extra Issue 1 )   2018

    　More details

  • アジアからアフリカへ-緑の革命は起こされるのか-

    坂上潤一

    熱帯農業研究   9 ( Extra Issue 2 )   2016

    　More details

  • Rain-fed rice cultivation on floodplain wetlands of the White Volta River in Republic of Ghana:- Study on a characteristics of water quality and material flow at the floodplain wetlands and experimental paddy fields -

    IIZUMI Yoshiko, SAKAGAMI Jun-Ichi, TSUJIMOTO Yasuhiro, HATTA Tamao

    Proceedings of the General Meeting of the Association of Japanese Geographers   2013 ( 0 )   3 - 3   2013

    　More details

    Publisher：The Association of Japanese Geographers  

    DOI： 10.14866/ajg.2013s.0_3

    J-GLOBAL

  • イネの冠水被害と冠水抵抗性 Reviewed

    坂上潤一、 曽根千晴、中園幹生

    日本作物学会紀事   81   1 - 9   2012.1

    　More details

    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

  • Mineralogical and Chemical Properties of Soils around the Flood Plain of White Volta River in Ghana

    HATTA Tamao, OYA Tetsuji, TSUJIMOTO Yasuhiro, HAYASHI Keiichi, NEMOTO Seiko, SAKAGAMI Jun-Ichi

    Abstracts of annual meeting of The Clay Science Society of Japan   55th ( 0 )   160 - 161   2011

    　More details

    Publisher：The Clay Science Society of Japan  

    DOI： 10.11248/nettai.5.160

    DOI： 10.11362/cssj2.55.0_160

    J-GLOBAL

  • Collaborative Exploration of African rice (Oryza glaberrima Steud.) in Sénégal and Guinea in 2006

    ( 23 )   109 - 123   2007.11

    　More details

    Language：English   Publisher：National Institute of Agrobiological Sciences  

    DOI： 10.24514/00004602

  • Water competition in upland rice-maize intercropping

    Yoshida Tomoharu, Amara Cisse, Izumi Yasuhiro, Sakagami Jun-Ichi, Iijima Morio

    Abstracts of Meeting of the CSSJ   224th ( 0 )   56 - 56   2007

    　More details

    Publisher：CROP SCIENCE SOCIETY OF JAPAN  

    DOI： 10.14829/jcsproc.224.0.56.0

    J-GLOBAL

▼display all

Presentations

  • Arinal H.I. Nurrahma, Shin Yabuta, and Jun-Ichi Sakagami   Starch and sugar as source of reserved carbohydrates on rice with different mechanism toward submergence  

    第249回日本作物学会講演会 

    　More details

    Event date： 2020.3

    Language：English   Presentation type：Oral presentation (general)  

  • 田丸翔太郎・薮田伸・坂上潤一   嫌気条件下における栽培イネ種子根の破生通気組織及び根の組織サイズの反応  

    第249回日本作物学会講演会 

    　More details

    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 中尾祥宏・吉野稔・宮本輝尚・上岡莉枝子・畠中京介・坂上潤一   天水直播栽培におけるイネ種子のハイドロプライミング処理が収量に及ぼす影響  

    第249回日本作物学会講演会 

    　More details

    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 畠中京介，籔田 伸，坂上 潤一   天水条件下におけるイネ種間雑種NERICAの根の可塑性に関する研究  

    第127 回日本熱帯農業学会講演会 

    　More details

    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 後藤啓太・薮田伸・坂上潤一   連続的に異なる土壌水分条件におけるトウガラシ（Capsicum chinense）の水ストレス応答  

    第127 回日本熱帯農業学会講演会 

    　More details

    Event date： 2020.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 中尾祥宏 ・坂上潤一   土壌乾燥条件下におけるプライミング種子の環境適応性  

    第127 回日本熱帯農業学会講演会 

    　More details

    Event date： 2020.3

    Language：Japanese   Presentation type：Poster presentation  

  • Juyoung Choi, Seong Woo Cho, Swapan Kumar Roy, Jae Buhm Chun, Soo-Jeong Kwon, Kwa-Kyung Sung, Jun-Ichi Sakagami, Sun-Hee Woo   Comparison of morpho-physiological changes of common buckwheat (Fagopyrum esuculentum Moench.) and rice (Oryza sativa L.) to waterlogging stress   International conference

    Annual meeting of Korean Crop Science Society and International Forum in 2019/ 2019年韓国作物学会秋季大会講演会・国際フォーラム 

    　More details

    Event date： 2019.9 - 2019.10

    Language：English   Presentation type：Oral presentation (general)  

  • Keisuke Hatanaka, Shin Yabuta, Minoru Yoshino, Jun-Ichi Sakagami   Root system development of rice in different soil moisture condition in Uganda field．   International conference

    Annual meeting of Korean Crop Science Society and International Forum in 2019/2019年韓国作物学会秋季大会講演会・国際フォーラム 

    　More details

    Event date： 2019.9 - 2019.10

    Language：English   Presentation type：Oral presentation (general)  

  • Keita Goto, Shin Yabuta, and Junichi Sakagami   Development of chili pepper growth model under different soil water conditions   International conference

    Annual meeting of Korean Crop Science Society and International Forum in 20192019年韓国作物学会秋季大会講演会・国際フォーラム 

    　More details

    Event date： 2019.9 - 2019.10

    Language：English   Presentation type：Oral presentation (general)  

  • Choi, J.Y., Cho, S.W., Roy, S.K., Kwon, S.J., Sakagami, J.I., Park, C.H. and Woo, S.H.   Influences of flooding stress on growth characteristics in common buckwheat (Fagopyrum esculentum) at early growth stage   International conference

    14th international symposium on buckwheat 

    　More details

    Event date： 2019.9

    Language：English   Presentation type：Oral presentation (general)  

  • 田丸翔太郎・籔田伸・坂上潤一   キャッサバの葉厚がクロロフィル含量とSPAD値の相関性に及ぼす影響  

    第248回日本作物学会講演会 

    　More details

    Event date： 2019.8

    Language：Japanese   Presentation type：Oral presentation (general)  

  • J-I. Sakagami, Y Iwata, A H I Nurrahma, E Siaga, A Junaedi, S Yabuta   Plant adaptations to anaerobic stress caused by flooding   International conference

    1st International Conference for Sustainable Plant Adaptation 

    　More details

    Event date： 2019.8

    Language：English   Presentation type：Oral presentation (general)  

  • Choi, J.Y., Roy, S.K., Kwon, S.J., Ju, Y.H., Lee, D.G., Yun, S.H., So, Y.S., Sakagami, J.I. and Woo, S.H.   Morpho-physiological response of common buckwheat (Fagopyrum esculentum) to flooding stress at early growth stage   International conference

    The Korean Society of Crop Science Conference 

    　More details

    Event date： 2019.4

    Language：English   Presentation type：Oral presentation (general)  

  • Ju-Young Choi, Arinal H.I. Nurrahma, Yukiko Iwata, Yoshihiro Nakao, Shin Yabuta, Swapan Kummer Roy, Soo-Jeong Kwon, Sun-Hee Woo, Jun-Ichi Sakagami   Morpho-physiological response of flooding stress at different growth stages of Common Buckwheat ( Fagopyrum esculentum )  

    第247回日本作物学会講演会 

    　More details

    Event date： 2019.3

    Language：English   Presentation type：Oral presentation (general)  

  • 坂上 潤一, 小森 健太, 中尾 祥宏, Arinal Haq Izzawati Nurrahma, 長田 泰二郎, 籔田 伸   サトウキビの梢頭部切除は台風被害を軽減するか  

    ．第247回日本作物学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 籔田 伸, 中尾 祥宏, Arinal H.I. Nurrahma,坂上 潤一   登熟期間中の緑葉面積の推移がNERICA4の収量およびその構成要素に与える影響について  

    第247回日本作物学会講演会 

    　More details

    Event date： 2019.3

    Language：English   Presentation type：Oral presentation (general)  

  • Arinal Haq Izzawati Nurrahma, Shin Yabuta, Ahmad Junaedi, Jun-Ichi Sakagami   Photosynthetic rates of rice with contrast mechanism during complete submergence followed by reaeration condition  

    第247回日本作物学会講演会 

    　More details

    Event date： 2019.3

    Language：English   Presentation type：Oral presentation (general)  

  • 岩永響希，籔田伸，坂上潤一   ひこばえを利用した高収量稲作栽培体系の評価  

    第245回日本作物学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Poster presentation  

  • 坂上潤一   湛水条件下におけるサトウキビの根の形態的変化  

    第125回日本熱帯農業学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 中尾祥宏、籔田伸、坂上潤一   イネの天水直播栽培におけるプライミング種子利用リスクの検討  

    第125回日本熱帯農業学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 岩田晋子，籔田伸，坂上潤一   ひこばえを利用した高収量稲作栽培体系の評価．125回日本熱帯農業学会講演会  

    第125回日本熱帯農業学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 飯笹さやか, 西原悟, 長田泰二朗, 佐藤光徳, 薮田伸, 坂上潤一   サトウキビの梢頭部切除処理は台風による倒伏被害軽減に有効である  

    第123回日本熱帯農業学会講演会 

    　More details

    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 中尾 祥宏, 吉野 稔, 小島 伸幾, 花田 博之, 宮本 輝尚, 上岡 莉枝子, 坂上 潤一   農家に普及可能なイネ種子へのハイドロプライミング処理法の開発  

    第245回日本作物学会講演会 

    　More details

    Event date： 2018.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 小森健太・加治屋勝子・坂上潤一   トウガラシ果実の辛み成分含量の種間経時的変化  

    第123回日本熱帯農業学会講演会 

    　More details

    Event date： 2018.3

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 小森健太・Quoc Trung・Nguyen Minh・Pham Van Cuong・坂上潤一   ベトナムにおけるトウガラシの探索、収集および評価  

    第123回日本熱帯農業学会講演会 

    　More details

    Event date： 2018.3

    Language：Japanese   Presentation type：Poster presentation  

  • Constantine Busungu, 一谷勝之，坂上潤一，川口祥輝，河邊弘太郎，田浦悟   High-resolution mapping and characterization of xa42, a gene showing multiple resistance to rice bacterial blight strains  

    日本育種学会九州育種談話会 

    　More details

    Event date： 2016.12

    Language：English   Presentation type：Oral presentation (general)  

  • 岩田晋子, 坂上潤一, JUNAEDI Ahamad   インドネシア改良新系統の冠水抵抗性評価  

    第120回日本熱帯農業学会講演会 

    　More details

    Event date： 2016.10

    Language：Japanese   Presentation type：Poster presentation  

  • 坂上潤一   アジアからアフリカへ―緑の革命は起こされるのか  

    第120回日本熱帯農業学会講演会 

    　More details

    Event date： 2016.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 岩田晋子・坂上潤一   インドネシア改良新系統の冠水抵抗性評価  

    日本熱帯農業学会 

    　More details

    Event date： 2016.9

    Language：Japanese   Presentation type：Poster presentation  

  • 曽根千晴, 小田正人, 辻本泰弘, 桂圭佑, 中尾祥宏, 坂上潤一   ガーナ北部の氾濫原低湿地におけるイネの出芽および初期成長に及ぼすプライミング処理の効果  

    第242回日本作物学会講演会 

    　More details

    Event date： 2016.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 中尾 祥宏, 辻本 泰弘, 桂 圭佑, 曽根 千晴, 坂上 潤一   ガーナ北部の氾濫原低湿地におけるイネの出芽および初期成長に及ぼすプライミング処理の効果  

    日本作物学会 

    　More details

    Event date： 2016.9

    Language：Japanese   Presentation type：Poster presentation  

  • Sheikh Muhammad Masum, Md. Amzad Hossain, 赤嶺 光, 坂上 潤一   バングラデシュの在来イネのアレロパシーについて  

    日本作物学会 

    　More details

    Event date： 2016.9

    Language：English   Presentation type：Poster presentation  

  • Sheikh Muhammad Masum, Md. Amzad Hossain, 赤嶺 光, 坂上 潤一   バングラデシュの在来イネのアレロパシーについて  

    第241回日本作物学会講演会 

    　More details

    Event date： 2016.3

    Language：English   Presentation type：Poster presentation  

  • 中尾祥宏, 坂上潤一   イネ種籾の水分吸収とプライミング効果の関係  

    第241回日本作物学会講演会 

    　More details

    Event date： 2016.3

    Language：Japanese   Presentation type：Poster presentation  

  • 境垣内岳雄, 樽本祐助, 田中穣, 坂上潤一, 服部太一朗, 早野美智子, 伊禮信   クロロフィル蛍光を指標としたサトウキビ遺伝資源の低温ストレス耐性の評価  

    第241回日本作物学会 

    　More details

    Event date： 2016.3

    Language：Japanese   Presentation type：Poster presentation  

  • 中尾祥宏, 辻本泰弘, 桂圭佑, 曽根千晴, 坂上潤一   ガーナの環境下におけるプライミング効果の再現性  

    第241回日本作物学会講演会 

    　More details

    Event date： 2016.3

    Language：Japanese   Presentation type：Poster presentation  

  • 中尾 祥宏, 辻本 泰弘, 桂 圭佑, 曽根 千晴, 坂上 潤一   ガーナの環境下におけるプライミング効果の再現性  

    日本作物学会 

    　More details

    Event date： 2016.3

    Language：Japanese   Presentation type：Poster presentation  

  • 中尾祥宏・坂上潤一   イネ種籾の水分吸収とプライミング効果の関係  

    日本作物学会 

    　More details

    Event date： 2016.3

    Language：Japanese   Presentation type：Poster presentation  

  • Constantine Busungu、一谷　勝之、坂上　潤一、穴井　豊昭、川口　祥輝、田中　孝尚、河邊　弘太郎、田浦　悟,   Mapping and characterization of rice bacterial blight of XM14 mutant gene.  

    日本育種学会 

    　More details

    Event date： 2016.3

    Language：English   Presentation type：Poster presentation  

  • 樋口桃子,坂上潤一,丸山幸夫   土壌水分ストレス下におけるNERICAの穎花退化率の品種間差の解析  

    日本作物学会  日本作物学会

    　More details

    Event date： 2015.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • Irmawati, H. Ehara, R. A. Suwignyo and J. Sakagami   The effect of nitrogen application before or after double submergence stress condition on growth parameters of rice seedlings  

    日本作物学会  日本作物学会

    　More details

    Event date： 2015.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • 桂 圭佑,小田正人,松嶋賢一,Baba Inusah,Wilson Dogbe4,坂上潤一   ガーナ北部の氾濫低湿地での稲作における適正イネ品種の選定  

    日本作物学会  日本作物学会

    　More details

    Event date： 2015.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • Amalia R. Putri, Rujito A. Suwignyo, Hiro Ehara, Jun-Ichi Sakagami, Irmawati   Response of Some Rice Genotypes Different in Submerged Tolerance on GA and ABA Treatments under Submergence Stress Condition  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2014.10

    Language：Japanese  

    Venue：福岡  

    国内学会

  • Rujito A. Suwignyo, Jun-Ichi Sakagami, Hiroshi Ehara, Christin Sanova   Growth Characteristics of Some Rice Genotypes from Japan under Tropical Tidal Swamp Land of South Sumatera, Indonesia  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2014.10

    Language：Japanese  

    Venue：福岡  

    国内学会

  • Sri Wahyuni, Rujito A. Suwignyo, Jun-Ichi Sakagami, Hiroshi Ehara, Takahiro Koba, M. Hasmeda   Agronomical Performances of Japanese Rice Varieties under Ratoon Crop Systemin Tropical Tidal Swamp Land of South Sumatra, Indonesia  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2014.10

    Language：Japanese  

    Venue：福岡  

    国内学会

  • 八田珠郎,坂上潤一,根本清子,辻本泰弘,桂圭佑,小田正人,清川昌一,伊藤孝,伊藤健一,小室光世,宮脇律郎,Yahaya INUSAH,Wilson DODBE,Mathias FOSU,Stephen K. NUTSUGAH   ガーナ共和国における水酸化リン酸カリウムアンモニウムアルミニウム鉄二水和鉱物  

    日本粘土学会  日本粘土学会

    　More details

    Event date： 2014.9

    Language：Japanese  

    Venue：福島  

    国内学会

  • 辻本泰弘,山本由紀代,藤原洋一,坂上潤一   ガーナ北部氾濫低湿地における地形条件と施肥成分の違いがイネ収量に及ぼす効果  

    日本作物学会  日本作物学会

    　More details

    Event date： 2014.9

    Language：Japanese  

    Venue：愛媛  

    国内学会

  • Jun-Ichi Sakagami、Kenichi Matsushima   Hydro- priming effect of rice seed on germination and seedling emergence under various moisture conditions in cultivated species   International conference

    8th Asian Crop Science Association Conference  8th Asian Crop Science Association Conference

    　More details

    Event date： 2014.9

    Language：English  

    Venue：ヴェトナム  

    国際学会

  • 桂圭祐、松島賢一、Yahaya Inusah、Tahiru Furela、坂上潤一   ガーナ北部の氾濫原低湿地でのイネ収量におよぼす品種ｘ環境相互作用の解析  

    日本作物学会  日本作物学会

    　More details

    Event date： 2014.3

    Language：Japanese  

    Venue：千葉  

    国内学会

  • 樋口桃子、坂上潤一、丸山幸夫   NERICAの葯および花粉形態、受粉特性に及ぼす穂ばらみ期および開花期の土壌水分ストレスの影響  

    日本作物学会  日本作物学会

    　More details

    Event date： 2014.3

    Language：Japanese  

    Venue：千葉  

    国内学会

  • Rujito Agus Suwignyo, Jun-Ichi Sakagami   Challenge to poor environment for extendimg crop field in Indonesia  

    日本作物学会  日本作物学会

    　More details

    Event date： 2014.3

    Language：Japanese  

    Venue：千葉  

    国内学会

  • Junaedi Ahmad, Achmad Chozin Muhamad, Sakagami Jun-Ichi, Ehara Hiroshi   Root performance of drought tolerant rice evaluated using rootbox under submergence and drought condition  

    日本作物学会  日本作物学会

    　More details

    Event date： 2014.3

    Language：Japanese  

    Venue：千葉  

    国内学会

  • Momoko HIguchi, Jun-Ichi Sakagami, Sachio Maruyama   Analysis of photosynthesis in NERICAs under soil moisture stress at booting stage   International conference

    The annual meeting of the Korean Society of Crop Science  The annual meeting of the Korean Society of Crop Science

    　More details

    Event date： 2013.10

    Language：English  

    Venue：PyeongChang  

    国際学会

  • Jun-Ichi Sakagami, Ken-ichi Matsushima   Effect of seed priming on shortening of emergence time and enhancement of seeding vigor in rice   International conference

    The annual meeting of the Korean Society of Crop Science  The annual meeting of the Korean Society of Crop Science

    　More details

    Event date： 2013.10

    Language：English  

    Venue：PyeongChang  

    国際学会

  • 松島賢一,藤本直也,坂上潤一   種々の土壌水分条件におけるイネ種子のプライミングの出芽苗立ち向上効果  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.9

    Language：Japanese  

    Venue：鹿児島  

    国内学会

  • Yahaya Inusah, Sachio Maruyama, Chiharu Sone, Ken-ichi Matsushima, Naoya Fujimoto and Jun-Ichi Sakagami   Genotypic adaptation to complete submergence and drought in cultivated rice  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.9

    Language：Japanese  

    Venue：鹿児島  

    国内学会

  • 樋口桃子,坂上潤一,近藤始彦,丸山幸夫   NERICAの生産および光合成に及ぼす生殖生長期の土壌水分ストレスの影響  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.9

    Language：Japanese  

    Venue：鹿児島  

    国内学会

  • 山根浩,岡崎勇樹,Amara Cisse1,泉泰弘,坂上潤一,飯嶋盛雄   乾燥、塩、濁冠水ストレスに対するアジアイネ、アフリカイネおよび種間交雑系統の耐性評価  

    近畿作物・育種研究会  近畿作物・育種研究会

    　More details

    Event date： 2013.7

    Language：Japanese  

    Venue：和歌山  

    国内学会

  • 山本由紀代、辻本泰弘、坂上潤一   アフリカの氾濫低湿地における低投入稲作導入に向けた土壌肥沃度の評価（２）  

    システム農学会  システム農学会

    　More details

    Event date： 2013.5

    Language：Japanese  

    Venue：茨城  

    国内学会

  • 坂上潤一、曽根千晴   冠水中の葉のクロロフィル蛍光はイネ品種の冠水耐性評価指標となるか  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 内野彰, 森田弘彦, Fuseini Abraham, Fulera Tahiru, 坂上潤一   西アフリカ、ガーナ産スズメノコビエ(Paspalum scrobiculatum）の種子発芽特性と現地不耕起直播イネ圃場の雑草に対するブタクロールの好適処理時期  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2013.4

    Language：Japanese  

    Venue：京都  

    国内学会

  • 坂上潤一, ネストール ブルノ, 曽根千晴, 伊藤治, 生井幸子, 松嶋賢一   アフリカ天水田における遺伝子型・環境型の相互作用  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 松嶋賢一, 坂上潤一, 森田弘彦   湛水条件におけるイヌビエの出芽可能性  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2013.4

    Language：Japanese  

    Venue：京都  

    国内学会

  • 樋口 桃子, 坂上 潤一, 丸山 幸夫   NERICAの頴花形成, 稔実および登熟に及ぼす土壌水分ストレスの影響  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 飯泉佳子, 坂上潤一, 辻本泰弘, 八田珠郎   ガーナ共和国白ボルタ川における氾濫原湿地を利用した天水稲作栽培―氾濫原湿地と稲作圃場の水質特性と形成機構に関する研究―  

    日本地理学会  日本地理学会

    　More details

    Event date： 2013.3

    Language：Japanese  

    Venue：京都  

    国内学会

  • 桂圭佑, 松嶋賢一, INUSAH Yahaya, FURELA Tahiru, 坂上潤一   ガーナ北部の白ボルタ川氾濫原低湿地での稲作システム開発に向けた適正品種の選定  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 坂上潤一, 松嶋賢一   プライミングによる発芽時間短縮と発芽斉一性向上効果の品種間差異  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 坂上潤一, 曽根千晴   冠水条件下のイネにおける葉のクロロフィル崩壊の生理的機構  

    日本作物学会  日本作物学会

    　More details

    Event date： 2013.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 樋口 桃子 , 坂上 潤一 , 近藤 始彦 , 丸山 幸夫   ネリカの生育,収量および水利用効率に及ぼす土壌水分の影響  

    日本作物学会関東支部  日本作物学会関東支部

    　More details

    Event date： 2012.12

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • 角田毅、坂上潤一、安藤益夫   アフリカ氾濫原低湿地における稲作導入農家の特質－ガーナ北部地域を対象として－.  

    地域農林経済学会  地域農林経済学会

    　More details

    Event date： 2012.10

    Language：Japanese  

    Venue：大阪  

    国内学会

  • 坂上潤一、松嶋賢一、辻本泰弘、藤原洋一   遺伝子型・環境型相互解析手法を用いたサバンナ低湿地におけるイネの適性品種の選定  

    日本作物学会  日本作物学会

    　More details

    Event date： 2012.9

    Language：Japanese  

    Venue：宮城  

    国内学会

  • 坂上潤一、松嶋賢一   イネ種子のハードニング処理で種子吸水量が少なくても発芽が開始する  

    日本作物学会  日本作物学会

    　More details

    Event date： 2012.9

    Language：Japanese  

    Venue：宮城  

    国内学会

  • 山本由紀代, 辻本泰弘, 藤原洋一, 坂上潤一   アフリカの氾濫低湿地における低投入稲作導入に向けた土壌肥沃度の評価（１）   International conference

    システム農学会  システム農学会

    　More details

    Event date： 2012.5

    Language：English  

    Venue：鳥取  

    国際学会

  • 内野彰、森田弘、Yahaya Inusah、Alhassan Zakaria、辻本泰弘、坂上潤一   現地の雑草防除事例と主要雑草に対する除草剤の効果  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 森田弘彦、坂上潤一   ガーナ北部サバンナ低湿地イネ圃場での雑草相の特徴と雑草データベースの構築  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 八田珠郎、大矢徹治、辻本泰弘、林慶一、根本清子、小室光世、Yahaya INUSAH、 Mathias FOSU、Stephen K. NUTSUGAH、越後拓也、坂上潤一   ガーナ産リン酸塩鉱物の農業利用への可能性  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 大矢徹治、坂上潤一   アフリカ稲作振興とわが国の国際支援  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 辻本泰弘、山本由紀代、Alhassan I. Zakaria、Yahaya Inusah、坂上潤一   土壌化学性からみたイネ生産ポテンシャルの空間変異  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 坂上潤一、曽根千晴   イネの湛水適応性の向上  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 山本由紀代、藤原洋一、辻本泰弘、Mathias FOSU、坂上潤一   地理的情報に基づく湛水可能性の評価  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 角田毅、坂上潤一、安藤益夫、Inusah Yahaya   複合化の進展と稲作導入農家の特質  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 林 慶一、坂上潤一   氾濫低湿地の土壌肥沃度と稲作導入の可能性  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2012.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 辻本泰弘、山本由紀代、八田球郎、坂上潤一   ガーナ国白ボルタ河氾濫原における窒素と硫黄の供給力とその施用効果に関する土壌間差異  

    日本作物学会  日本作物学会

    　More details

    Event date： 2012.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • Sakagami Jun-Ichi   Requirement for development of rice production in Africa  

    科学技術戦略推進費「東アフリカ稲作振興のための課題解決型研究」公開シンポジウム  科学技術戦略推進費「東アフリカ稲作振興のための課題解決型研究」公開シンポジウム

    　More details

    Event date： 2012.2

    Language：Japanese  

    Venue：愛知  

    その他

  • 藤原洋一、山本由紀代、坂上潤一、辻本泰弘、藤井秀人   再解析データを用いたローカルな氾濫特性の解析についてー西アフリカボルタ川流域を対象としてー  

    雨水資源化システム学会  雨水資源化システム学会

    　More details

    Event date： 2011.11

    Language：Japanese  

    Venue：愛媛  

    国内学会

  • Sakagami Jun-Ichi   Lowland rice environment and potential in West Africa   International conference

    2011JIRCAS International Conference  2011JIRCAS International Conference

    　More details

    Event date： 2011.11

    Language：English  

    Venue：茨城  

    国際学会

  • Yasuhiro Tsujimoto, Yukiyo Yamamoto, Keiichi Hayashi, Alhassan I. Zakaria, Yahaya Inusah, Tamao Hatta, Mathias Fosu, Jun-Ichi Sakagami   Toposequentaial variation in soil fertility and limiting nutrient for rice growth in the White Volta floodplain of northern Ghana   International conference

    7th Asian Crop Science Association Conference  7th Asian Crop Science Association Conference

    　More details

    Event date： 2011.11

    Language：English  

    Venue：Indonesia  

    国際学会

  • Sakagami Jun-Ichi   Submergence escape in Oryza glaberrima Steud. in Africa   International conference

    7th Asian Crop Science Association Conference  7th Asian Crop Science Association Conference

    　More details

    Event date： 2011.11

    Language：English  

    Venue：Indonesia  

    国際学会

  • 山本由紀代、辻本泰弘、藤原洋一、坂上潤一、越智士郎   アフリカの低湿地氾濫原における低投入稲作導入に向けた湛水可能性の評価   International conference

    システム農学会  システム農学会

    　More details

    Event date： 2011.10

    Language：English  

    Venue：京都  

    国際学会

  • 山本由紀代, 辻本泰弘, 藤原洋一, 坂上潤一, 越智士郎   アフリカの低湿地氾濫源における低投入稲作導入に向けた湛水可能性の評価（2）  

    システム農学会  システム農学会

    　More details

    Event date： 2011.10

    Language：Japanese  

    Venue：広島  

    国内学会

  • 内野彰、森田弘彦、Yahaya Inusah、Alhassan Zakaria、辻本泰弘、坂上潤一   西アフリカガーナ国産スズメノコビエの種子発芽特性と数茎葉処理剤のよる防除効果  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2011.10

    Language：Japanese  

    Venue：東京  

    国内学会

  • 越後拓也、山田裕久、田村堅志、八田珠郎、坂上潤一、辻本泰弘   非晶質鉄-リン酸塩からのspheniscidite[NH4Fe2(PO4)2(OH)・2H2O]の生成機構  

    日本粘土学会  日本粘土学会

    　More details

    Event date： 2011.9

    Language：Japanese  

    Venue：鹿児島  

    国内学会

  • Morita H., Sakagami J-I.   WEED INFESTATION AND ITS INFLUENCES ON EARLY GROWTH OF RICE (Oryza sativa L.) IN FLOODED PLAINS OF SAVANNA IN NORTHERN GHANA.   International conference

    23th Asian and Oceania weed sciences meeting  23th Asian and Oceania weed sciences meeting

    　More details

    Event date： 2011.9

    Language：English  

    Venue：Australia  

    国際学会

  • 林剛志、泉泰弘、鈴木哲司、坂上潤一、山根浩二、飯嶋盛雄   根箱法によるNERICA根系発達の検討：とくに乾燥ストレス耐性評価  

    日本作物学会  日本作物学会

    　More details

    Event date： 2011.9

    Language：Japanese  

    Venue：山口  

    国内学会

  • Hatta T., Echigo T., Nemoto, S., Sakagami J-I., Komuro K., Tsujimoto Y., Oya   Some Phosophate Minerals in Ghana   International conference

    EUROCLAY2011  EUROCLAY2011

    　More details

    Event date： 2011.6

    Language：English  

    Venue：Turky  

    国際学会

  • 山本由紀代、辻本泰弘、藤原洋一、坂上潤一、越智士郎   アフリカの低湿地氾濫原における低投入稲作導入に向けた湛水可能性の評価  

    システム農学会  システム農学会

    　More details

    Event date： 2011.5

    Language：Japanese  

    Venue：京都  

    国内学会

  • Hatta. T., Echigo T., Sakagami J-I., Oya T., Tsujimoto Y. and Nemoto S.   Contribution to the agriculture of the hydrous Phosphate mineral discovered in Ghana, West Africa   International conference

    1st International Workshop on Clay Science and Technology  1st International Workshop on Clay Science and Technology

    　More details

    Event date： 2011.5

    Language：English  

    Venue：Korea  

    国際学会

  • 内野彰、森田弘彦、Yahaya Inusah、Alhassan Zakaria、辻本泰弘、坂上潤一   西アフリカガーナ国産スズメノコビエの種子発芽特性と数茎葉処理剤のよる防除効果  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2011.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • Petrus Ausiku, Amara Cisse, 吉鶴 孝志, 泉 泰弘, 鈴木 哲司, 林 剛志, Luke Kanyomeka, Osmund Mwandemele, 坂上 潤一, 山根 浩二, 飯嶋 盛雄   アジアイネとアフリカイネは貧栄養ストレスに対して異なる生育反応を示した  

    日本作物学会  日本作物学会

    　More details

    Event date： 2011.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 坂上潤一   アフリカ稲作開発における雑草研究の期待  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2011.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 森田弘彦、内野彰、Inusaha Yahata、坂上潤一   ガーナ共和国のサバンナ低湿地稲作における雑草群落の種形成  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2011.4

    Language：Japanese  

    Venue：東京  

    国内学会

  • 辻本泰弘、山本由紀代、林慶一、八田珠郎、坂上潤一   ガーナ国北部白ボルタ河氾濫原における土壌のイネ生産力の空間変異と欠乏養分の特定  

    日本作物学会  日本作物学会

    　More details

    Event date： 2011.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 藤原洋一、 山本由紀代、坂上潤一、辻本泰弘、藤井秀人   再解析データを用いたローカルな氾濫特性の解析についてー西アフリカボルタ川流域を対象としてー  

    雨水資源化システム学会  雨水資源化システム学会

    　More details

    Event date： 2011.1

    Language：Japanese  

    Venue：愛媛  

    国内学会

  • 曽根千晴、坂上潤一   防水加工したクロロフィル蛍光計はイネの冠水抵抗性の評価に有効である  

    平成22年度農研機構シンポジウム 麦・大豆栽培における湿害の現実と研究展開－水田高度利用に向けた耐湿性の生理・遺伝研究  平成22年度農研機構シンポジウム 麦・大豆栽培における湿害の現実と研究展開－水田高度利用に向けた耐湿性の生理・遺伝研究

    　More details

    Event date： 2010.12

    Language：Japanese  

    Venue：東京  

    その他

  • 坂上潤一、曽根千晴   水中でも成長するイネを開発する  

    SAT10周年記念つくばテクノロジーショーケース  SAT10周年記念つくばテクノロジーショーケース

    　More details

    Event date： 2010.12

    Language：Japanese  

    Venue：茨城  

    その他

  • 坂上潤一   アフリカにおける洪水を活用した新稲作技術の開発  

    平成22年度農研機構シンポジウム 麦・大豆栽培における湿害の現実と研究展開－水田高度利用に向けた耐湿性の生理・遺伝研究  平成22年度農研機構シンポジウム 麦・大豆栽培における湿害の現実と研究展開－水田高度利用に向けた耐湿性の生理・遺伝研究

    　More details

    Event date： 2010.12

    Language：Japanese  

    Venue：東京  

    その他

  • Morita, H., A. Uchino, Y. Inusah and J. Sakagami   CHARACTERISTICS OF WEED FLORA IN RICE FIELDS OF LOWLAND SAVANNA OF GHANA   International conference

    3rd International Rice Congress  3rd International Rice Congress

    　More details

    Event date： 2010.11

    Language：English  

    Venue：Vietnam  

    国際学会

  • 山本由紀代、林慶一、辻本泰弘、坂上潤一、藤原洋一   アフリカ低湿地における稲作の導入可能性を予見するための基礎分析   International conference

    システム農学会  システム農学会

    　More details

    Event date： 2010.11

    Language：English  

    Venue：兵庫  

    国際学会

  • Hayashi, K., Hatta, T, Sakagami, J., Fosu, M.   Evaluation of soil characteristics of flood plain in northern part of Ghana   International conference

    3rd International Rice Congress  3rd International Rice Congress

    　More details

    Event date： 2010.11

    Language：English  

    Venue：Vietnam  

    国際学会

  • Sakagami, J-I., O. Ito and C. Sone.   Submergence tolerance with mechanisms of translocation of photosynthetic product during early rice seedling in Africa   International conference

    3rd International Rice Congress  3rd International Rice Congress

    　More details

    Event date： 2010.11

    Language：English  

    Venue：Vietnam  

    国際学会

  • 角田毅、坂上潤一、安藤益夫、Inusah YAHAYAH   ガーナにおける稲作の経済性と制約要因－北部地域タマレ近郊農村を対象として－  

    地域農林経済学会  地域農林経済学会

    　More details

    Event date： 2010.10

    Language：Japanese  

    Venue：京都  

    国内学会

  • 内野彰、森田弘彦、Inusah，Yahaya、坂上潤一   ガーナ共和国のサバンナ 低湿地稲作における雑草防除の事例   International conference

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2010.10

    Language：English  

    Venue：福井  

    国際学会

  • 森田弘彦、内野彰、Inusah,Yahaya、坂上潤一   ガーナ共和国のサバンナ 低湿地稲作における雑草相の特徴  

    日本雑草学会  日本雑草学会

    　More details

    Event date： 2010.10

    Language：Japanese  

    Venue：福井  

    国内学会

  • 曽根千晴、伊藤治、坂上潤一   クロロフィル蛍光特性からみたイネの冠水抵抗性の品種間差異  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Jun-Ichi Sakagami   Development of low input rice cultivation system in flood plains  

    Workshop on Development of Rice Production for Lowland in Africa-JIRCAS contribution in rice research to the CARD  Workshop on Development of Rice Production for Lowland in Africa-JIRCAS contribution in rice research to the CARD

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：茨城  

    その他

  • Salah El-Hendawy, Jun-Ichi Sakagami.   Seed physiology for development of direct seeding technology in floodplains  

    Workshop on Development of Rice Production for Lowland in Africa-JIRCAS contribution in rice research to the CARD  Workshop on Development of Rice Production for Lowland in Africa-JIRCAS contribution in rice research to the CARD

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：茨城  

    その他

  • Hatta, T., Sakagami, J-I., Hayashi, K., Fujihara, Y., Nemoto, S., Oya, T., Matsumoto, N., Shinohara,Y.   Study on crystal growth and control to improve soil fertility in West Africa   International conference

    The 2010 SEA－CSSJ－CMS Trilateral Meeting on Clays  The 2010 SEA－CSSJ－CMS Trilateral Meeting on Clays

    　More details

    Event date： 2010.9

    Language：English  

    Venue：Spain  

    国際学会

  • El Hendawy Salah, Chiharu Sone, Osamu Ito, Jun-Ichi Sakagami   Effect of water absorption patterns on anaerobic germination in rice seed  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Tetsuji Suzuki, Yasuhiro Izumi, Jun-Ichi Sakagami, Takeshi Ohta, Luke Kanyomeka,Osmund Mwandemele, and Morio Iijima   The comparison of water use efficiency of rice in semi-arid region, Namibia and in humid region, Japan  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Amara Cisse, Yasuhiro Izumi, Koji Yamane, Jun-Ichi Sakagami and Morio Iijima   Turbidity tolerance of Oryza glaberrima Steud., O. sativa L. and their interspecific progenies including NERICA during submergenc  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Petrus AUSIKU, Takashi YOSHIZURU, Yasuhiro IZUMI, Suzuki TETSUJI, Hayashi TAKESHI, Luke KANYOMEKA, Osmund MWANDEMELE, Jun-Ichi SAKAGAMI, Yamane KOUJI, Morio IIJIMA   Tolerance to low nutrient soil stress of Oryza glaberrima, Oryza sativa and its interspecific progenies including NERICA: Genotype selection for seasonal wetlands in north-central Namibia  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Petrus AUSIKU, Cisse AMARA，Takashi YOSHIZURU, Yasuhiro IZUMI, Suzuki TETSUJI, Hayashi TAKESHI, Luke KANYOMEKA, Osmund MWANDEMELE, Jun-Ichi SAKAGAMI, Yamane KOUJI, Morio IIJIMA   O. sativa and O. glaberrima mostly responded differently to low nutrient stress condition  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • Tetsuji Suzuki, Takeshi Ohta, Yasuhiro Izumi, Luke Kanyomeka, Osmund Mwandemele, Jun-Ichi Sakagami, Kouji Yamane and Morio Iijima   Larger biomass coverage enables high water use efficiency especially in semi -arid regions  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • 坂上潤一、伊藤治、曽根千晴   冠水抵抗性イネの光合成産物13Cの転流  

    日本作物学会  日本作物学会

    　More details

    Event date： 2010.9

    Language：Japanese  

    Venue：北海道  

    国内学会

  • 山本由紀代、藤原洋一、岡田珠生、坂上潤一   衛星データを用いたガーナ・ボルタ川流域低湿地における湛水動態の把握  

    システム農学会  システム農学会

    　More details

    Event date： 2010.5

    Language：Japanese  

    Venue：栃木  

    国内学会

  • Jun-Ichi Sakagami, Salah El-Hendawy, Yuncai Hu, Urs Schmidhalter   The potential of selection salt tolerance in wheat genotypes at germination and seedling stages  

    日本作物学会関東支部  日本作物学会関東支部

    　More details

    Event date： 2009.12

    Language：Japanese  

    Venue：茨城  

    国内学会

  • Amara Cisse, Yasuhiro Izumi, Jun-Ichi Sakagami, Morio Iijima   Survival of prolonged flooding stress during seedling stage of rice in Oryza sativa, O. glaberrima and NERICA  

    日本作物学会  日本作物学会

    　More details

    Event date： 2009.9

    Language：Japanese  

    Venue：静岡  

    国内学会

  • NAMHAPO Pamwenafe, KANYOMEKA Luke, NAKAMURA Shuhei, IZUMI Yasuhiro, SAKAGAMI Jun-Ichi., IIJIMA Morio   Deep rooting of NERICA, Oryza glaberrima Steud and Oryza sativa L. genotypes: Evaluation under compacted soil   International conference

    Namibia Crop Science Meeting 2009  Namibia Crop Science Meeting 2009

    　More details

    Event date： 2009.7

    Language：English  

    Venue：Namibia  

    国際学会

  • 坂上潤一   アフリカ稲作栽培研究の今後の方向性  

    JIRCAS・JICAアフリカ稲作研究ワークショップ  JIRCAS・JICAアフリカ稲作研究ワークショップ

    　More details

    Event date： 2009.6

    Language：Japanese  

    Venue：東京  

    その他

  • 生井幸子, 伊藤治, 坂上潤一   西アフリカコメ生産制限要因の解明－遺伝型・環境型相互作用解析の導入－  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2009.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • J-I. Sakagami   Rice development strategy by Japanese government and crop research in Africa  

    International symposium of Crop Science, Crop Science Society of Japan  International symposium of Crop Science, Crop Science Society of Japan

    　More details

    Event date： 2009.3

    Language：Japanese  

    Venue：茨城  

    その他

  • Simon Awala1, Pamwenafye Nanhapo, Luke Kanyomeka, Jun-Ichi Sakagami, Osmund Mwandemele, Sheehamandje Ipinge, Yasuhiro Izumi Tetsuji Suzuk, Morio Iijima   Potentiality of rice cultivation in seasonal wetlands and Zambezi river flood plains in Namibia  

    日本作物学会  日本作物学会

    　More details

    Event date： 2009.3

    Language：Japanese  

    Venue：茨城  

    国内学会

  • J-I. Sakagami   Growth of submerged rice in West Afeica   International conference

    IWMI-JIRCAS Joint meeting in Accra  IWMI-JIRCAS Joint meeting in Accra

    　More details

    Event date： 2008.6

    Language：English  

    Venue：Ghana  

    国際学会

  • 坂上潤一, 長谷川利拡, 飛田哲   完全冠水がイネの光合成産物の転流に与える影  

    日本作物学会  日本作物学会

    　More details

    Event date： 2008.3

    Language：Japanese  

    Venue：茨城  

    国内学会

  • Jun-Ichi Sakagami, Yukiko Joho   Adaptable mechanisms of Oryza glaberrima Steud. for the flood-prone rice culture in West Africa   International conference

    9th International Society for Plant Anaerobsis  9th International Society for Plant Anaerobsis

    　More details

    Event date： 2007.11

    Language：English  

    Venue：宮城  

    国際学会

  • Kawano Naoyoshi, Ito Osamu, Sakagami Jun-Ichi   Morphological and physiological responses of rice seedlings to flash floods   International conference

    9th International Society for Plant Anaerobsis  9th International Society for Plant Anaerobsis

    　More details

    Event date： 2007.11

    Language：English  

    Venue：宮城  

    国際学会

  • 河野尚由・伊藤治・坂上潤一   ギニアの冠水圃場におけるO. sativa L., O. glaberrima Steud.および種間交雑種のフラッシュフラッディング耐性評価   International conference

    日本作物学会  日本作物学会

    　More details

    Event date： 2007.10

    Language：English  

    Venue：岐阜  

    国際学会

  • 吉田智晴, AMARA Cisse, 泉康弘, 坂上潤一, 飯島盛雄   陸稲‐トウモロコシ間作栽培における作物間の水競合  

    日本作物学会  日本作物学会

    　More details

    Event date： 2007.9

    Language：Japanese  

    Venue：石川  

    国内学会

  • Sakagami J-I.   L'amelioration du riz pluvial des stress environnementaux   International conference

    Atelier sur JIRCAS/IRAG  Atelier sur JIRCAS/IRAG

    　More details

    Event date： 2007.5

    Language：English  

    Venue：Guinea  

    国際学会

  • 飯嶋盛雄, 中村周平, AWALA Simon, NAMHAPO Pamwe, AMARA Cisse, 泉泰弘, 坂上潤一   フィールドでの作物根の圧縮土壌ストレス耐性評価:どのモデル実験系が優れるか?  

    根研究会  根研究会

    　More details

    Event date： 2007.5

    Language：Japanese  

    Venue：福岡  

    研究会

  • Jun-Ichi Sakagami, Yukiko Joho   Evaluation of water stress resistant in rainfed rice   International conference

    Workshop on development of rainfed rice for improving of environmental stress in Guinea  Workshop on development of rainfed rice for improving of environmental stress in Guinea

    　More details

    Event date： 2007.5

    Language：English  

    Venue：Guinea  

    国際学会

  • Lamine Djarakoro Doumbouya, Jun-Ichi Sakagami   Genotypic adaptability of selected cultivar in Guinea through the three years field experiment   International conference

    Workshop on development of rainfed rice for improving of environmental stress in Guinea  Workshop on development of rainfed rice for improving of environmental stress in Guinea

    　More details

    Event date： 2007.5

    Language：English  

    Venue：Guinea  

    国際学会

  • Sakagami J-I.   Base de donne de germplasm du riz et ecosysteme de la riziculture en Guinee   International conference

    Atelier sur JIRCAS/IRAG  Atelier sur JIRCAS/IRAG

    　More details

    Event date： 2007.5

    Language：English  

    Venue：Gunea  

    国際学会

  • Simon AWALA, Pamwenafye NANHAPO, Teofilus LWINGA, Patrick KOMPELI, Luke KANYOMEKA, Jun-Ichi SAKAGAMI, Sheehamandjie IPINGE and Morio IIJIMA   Comparison of salinity tolerance among Oryza glaberrima Steud., NERICA and Oryza sativa L.  

    日本作物学会  日本作物学会

    　More details

    Event date： 2007.3

    Language：Japanese  

    Venue：茨城  

    国内学会

  • 坂上潤一, シセアマラ, 河野尚由   アフリカにおけるイネの水ストレス耐性向上  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 2007.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 城宝由紀子, 大政謙次, 坂上潤一   冠水伸長型Oryza.glaberrima STEUD.の冠水耐性  

    日本作物学会  日本作物学会

    　More details

    Event date： 2007.3

    Language：Japanese  

    Venue：茨城  

    国内学会

  • 河野尚由, 伊藤治, 坂上潤一   幼苗期におけるSaligbeli (Oryza glaberrima Steud.) のFlash floodsに対する生理的反応  

    日本植物生理学会  日本植物生理学会

    　More details

    Event date： 2007.3

    Language：Japanese  

    Venue：愛媛  

    国内学会

  • Naoyoshi Kawano, Osamu Ito and Jun-Ichi Sakagami   Flash flooding resistance of Oryza sativa L., O. glaberrima Steud., and Interspecific hybridization progenies   International conference

    1st International Africa Rice Congress  1st International Africa Rice Congress

    　More details

    Event date： 2006.7

    Language：English  

    Venue：Tanzania  

    国際学会

  • Sakagami, J., A. Cisse   Improvement of water stress resistance in raifed rice through developing of root system in West Africa   International conference

    1st International Africa Rice Congress  1st International Africa Rice Congress

    　More details

    Event date： 2006.7

    Language：English  

    Venue：Tanzania  

    国際学会

  • Yukiko JOHO, Kenji OHMASA, Jun-Ichi SAKAGAMI   Higher avoidance ability of Oryza glaberrima Steud. under the prolonged submergence condition   International conference

    1st International Africa Rice Congress  1st International Africa Rice Congress

    　More details

    Event date： 2006.7

    Language：English  

    Venue：Tanzania  

    国際学会

  • 坂上潤一   ギニアにおけるネリカ等イネの水ストレス耐性向上を目指して  

    第2回名古屋大学国際オープンセミナー  第2回名古屋大学国際オープンセミナー

    　More details

    Event date： 2006.4

    Language：Japanese  

    Venue：愛知  

    その他

  • 中村周平, 坂上潤一, 飯嶋盛雄   Oryza glaberrima Steud,(グラベリマイネ）の圧縮土壌ストレス耐性  

    日本作物学会  日本作物学会

    　More details

    Event date： 2006.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 坂上潤一, シセアマラ   アフリカにおける異なるイネ生態系の硬盤層形成過程  

    日本作物学会  日本作物学会

    　More details

    Event date： 2006.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 河野尚由, 小林伸哉, 福田善道, 坂上潤一   Oryza sativa L., O.glaberrima Steud.およびその種間交雑種のFlash flooding耐性  

    日本作物学会  日本作物学会

    　More details

    Event date： 2006.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 城宝由紀子, 大政謙次, 坂上潤一   長期冠水下におけるOryza.glaberrima STEUD.の生育特性  

    日本作物学会  日本作物学会

    　More details

    Event date： 2006.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 中村周平, 坂上潤一, 飯嶋盛雄   アフリカイネの圧縮土壌耐性  

    日本作物学会東海支部  日本作物学会東海支部

    　More details

    Event date： 2005.9

    Language：Japanese  

    Venue：岐阜  

    国内学会

  • Sakagami, J., Burounou, N., Joho Y., Tsunematsu H.   Variation of deep rooting ability in rice genotypes in Savanna/Woodland of West Africa   International conference

    2nd International Conference on Integrated Approaches, Inter Drought II  2nd International Conference on Integrated Approaches, Inter Drought II

    　More details

    Event date： 2005.9

    Language：English  

    Venue：Italy  

    国際学会

  • Kawano, N., Cisse, A. and Sakagami J-I.   The evaluation of drought resistance of O. glaberrima at early growth stage   International conference

    2nd International Conference on Integrated Approaches, Inter Drought II  2nd International Conference on Integrated Approaches, Inter Drought II

    　More details

    Event date： 2005.9

    Language：English  

    Venue：Italy  

    国際学会

  • 坂上潤一   アフリカ天水畑地におけるイネ遺伝資源の乾燥回避性の評価  

    日本作物学会  日本作物学会

    　More details

    Event date： 2005.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • 坂上潤一, 城宝由紀子, 大政謙次   Oryza sativa L.とO.glaberrima STEUD.の冠水回避性の評価  

    日本作物学会  日本作物学会

    　More details

    Event date： 2005.3

    Language：Japanese  

    Venue：神奈川  

    国内学会

  • Oladele. O., Jun-Ichi Sakagami   Impact of technology innovation on rice yield gap in Asia and West Africa   International conference

    Rural Poverty Reduction through Research for Development and Transformation,  Rural Poverty Reduction through Research for Development and Transformation,

    　More details

    Event date： 2004.10

    Language：English  

    Venue：Germany  

    国際学会

  • Oladele, O., J. Sakagami, K. Toriyama   Assessing rice research in West Africa through the yield gap model   International conference

    World Rice Research Conference 2004  World Rice Research Conference 2004

    　More details

    Event date： 2004.9

    Language：English  

    Venue：茨城  

    国際学会

  • Oladele, O., J. Sakagami, K. Toriyama.   Impact of extention services on rice yield gap in Nigeria 1980-2002   International conference

    World Rice Research Conference 2004  World Rice Research Conference 2004

    　More details

    Event date： 2004.9

    Language：English  

    Venue：茨城  

    国際学会

  • 坂上潤一   アフリカにおける新品種“ネリカ”の開発問題  

    日本農業土木学会  日本農業土木学会

    　More details

    Event date： 2004.3

    Language：Japanese  

    Venue：東京  

    その他

  • J-I. Sakagami   Challenge of rice improvement through physio-genetic research in West Africa  

    Seminar on Promotion of Rice Production and Dissemination in Africa  Seminar on Promotion of Rice Production and Dissemination in Africa

    　More details

    Event date： 2004.3

    Language：Japanese  

    Venue：Kenya  

    その他

  • 坂上潤一   アフリカ氾濫原地域におけるアフリカイネの利用  

    JIRCASアフリカ農業研究セミナー  JIRCASアフリカ農業研究セミナー

    　More details

    Event date： 2003.12

    Language：Japanese  

    Venue：茨城  

    その他

  • 坂上潤一   アフリカにおける我が国の稲作協力  

    JICA公開シンポジウム「開発途上国における我が国の稲作協力」  JICA公開シンポジウム「開発途上国における我が国の稲作協力」

    　More details

    Event date： 2003.12

    Language：Japanese  

    Venue：茨城  

    その他

  • 坂上潤一   アフリカにおける農業研究戦略  

    JICA・JIRCAS共同研究戦略セミナー  JICA・JIRCAS共同研究戦略セミナー

    　More details

    Event date： 2003.6

    Language：Japanese  

    Venue：茨城  

    その他

  • 坂上潤一   新品種ネリカはアフリカ農業発展に貢献できるか  

    日本アフリカ学会  日本アフリカ学会

    　More details

    Event date： 2003.5

    Language：Japanese  

    Venue：島根  

    国内学会

  • 坂上潤一, 常松浩史   深根性を指標にしたイネの耐乾性の品種間差異  

    日本作物学会  日本作物学会

    　More details

    Event date： 2003.3

    Language：Japanese  

    Venue：千葉  

    国内学会

  • M. Lorieux, J.-I. Sakagami, A. Ghesquiere.   Development of an Oryza sativa x O. glaberrima microsatellite-based genetic linkage map and its applications   International conference

    4th International Rice Genetics Symposium  4th International Rice Genetics Symposium

    　More details

    Event date： 2000.10

    Language：English  

    Venue：Philippines  

    国際学会

  • 坂上潤一, 礒田昭弘, 野島博, 高崎康夫   O. sativa と O. glaberrimaの成熟後の生育と生存の差異  

    日本作物学会  日本作物学会

    　More details

    Event date： 1998.9

    Language：Japanese  

    Venue：京都  

    国内学会

  • 坂上潤一, 礒田昭弘, 野島博, 高崎康夫   イネ属栽培種の成熟後の分げつ発生能力  

    日本作物学会  日本作物学会

    　More details

    Event date： 1997.3

    Language：Japanese  

    Venue：茨城  

    国内学会

  • Yasunori YAMAGISHI，Jun-Ichi SAKAGAMI，Mat NAJI and Balatero EGAMA.   Effect of cutting leaf at meiosis on the rachis and spikelets in rice.  

    日本作物学会  日本作物学会

    　More details

    Event date： 1996.4

    Language：Japanese  

    Venue：栃木  

    国内学会

  • 坂上潤一   ニジェールの伝統的稲作の現状と作付け品種  

    日本熱帯農業学会  日本熱帯農業学会

    　More details

    Event date： 1995.3

    Language：Japanese  

    Venue：東京  

    国内学会

  • 越後拓也, 山田裕久, 田村堅志, 八田珠郎, 坂上潤一, 辻本泰弘   非晶質鉄‐リン酸塩からのspheniscidite[(NH<sub>4</sub>)Fe<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>(OH)・2H<sub>2</sub>O]の生成機構  

    粘土科学討論会講演要旨集  2011.9 

  • 中尾祥宏, 吉野稔, 小島伸幾, 小島伸幾, 花田博之, 宮本輝尚, 上岡莉枝子, 坂上潤一   農家に普及可能なイネ種子へのハイドロプライミング処理法の開発  

    日本作物学会講演会要旨集  2018.3 

  • 籔田伸, 中尾祥宏, NURRAHMA Arinal H. I, 坂上潤一, 坂上潤一   登熟期間中の緑葉面積の推移がNFRICA4の収量およびその構成要素に与える影響について  

    日本作物学会講演会要旨集  2019.3 

  • 小森健太, QUOC Trung, NGUYEN Minh, PHAM Van Cuong, 坂上潤一   ベトナムにおけるトウガラシの探索,収集および評価  

    熱帯農業研究  2018.3 

  • 中尾祥宏, 吉野稔, 宮本輝尚, 上岡莉枝子, 坂上潤一   ハイドロプライミングがイネの天水直播栽培の生育および収量に与える影響  

    日本作物学会講演会要旨集  2019.3 

  • 小森健太, 加治屋勝子, 坂上潤一   トウガラシ果実の辛み成分含量の種間経時的変化  

    熱帯農業研究  2018.3 

  • 飯笹さやか, 西原悟, 長田泰二朗, 佐藤光徳, 薮田伸, 坂上潤一   サトウキビの梢頭部切除処理は台風による倒伏被害軽減に有効である  

    熱帯農業研究  2018.3 

  • 坂上潤一, 小森健太, 中尾祥宏, NURRAHMA Arinal, Haq Izzawati, 長田泰二郎, 藪田伸   サトウキビの梢頭部切除は台風被害を軽減するか  

    日本作物学会講演会要旨集  2019.3 

  • 田丸翔太郎, 籔田伸, 坂上潤一   キャッサバの葉厚がクロロフィル含量とSPAD値の相関性に及ぼす影響  

    第248回日本作物学会講演会  2019.9 

  • 松本健資, 吉野稔, 小島伸幾, 宮本輝尚, 坂上潤一   ウガンダにおける高収量品種NERICA4の生育特性  

    熱帯農業研究  2018.3 

  • Keisuke Hatanaka, Shin Yabuta, Minoru Yoshino, Jun-Ichi Sakagami   Root system development of rice in different soil moisture condition in Uganda field  

    Jun-Ichi Sakagami  2019.9 

  • J-I. Sakagami, Y Iwata, A H I Nurrahm, E Siaga, A Junaedi, S Yabuta   Plant adaptations to anaerobic stress caused by flooding  

    J-I. Sakagami  2019.8 

  • Ju-Young Choi, Arinal H.I. Nurrahma, Iwata Yukiko, Yoshihiro Nakao, Shin Yabuta, Swapan Kumar Roy, Soo-Jeong Kwon, Sun-Hee Woo, Jun-Ichi Sakagami   Morpho-physiological response of flooding stress at different growth stages of Common Buckwheat (Fagopyrum esculentum)  

    Jun-Ichi Sakagami  2019.3 

  • Keita Goto, Shin Yabuta, Junichi Sakagami   Development of chili pepper growth model under different soil water conditions  

    Junichi Sakagami  2019.9 

  • Juyoung Choi, Seong Woo Cho, Swapan Kumar Roy, Jae Buhm Chun, Soo-Jeong Kwon, Kwa-Kyung Sung, Jun-Ichi Sakagami, Sun-Hee Woo   Comparison of morpho-physiological changes of common buckwheat (Fagopyrum esuculentum Moench.) and rice (Oryza sativa L.) to waterlogging stress  

    Sun-Hee Woo  2019.9 

  • 坂上潤一   アジアからアフリカへ―緑の革命は起こされるのか―  

    熱帯農業研究  2016.10 

    　More details

    Language：Japanese  

▼display all

Awards

  • 2019年韓国作物学会秋季大会講演会・国際フォーラム優秀口頭発表賞

    2019.9   Korean Society of Crop Science  

    Keisuke Hatanaka, Shin Yabuta, Minoru Yoshino, Jun-Ichi Sakagami

    　More details

    Award type：Award from international society, conference, symposium, etc.  Country：Korea, Republic of

  • Award for excelent oral presentation

    2019.9   Korean Crop Science Society   Root system development of rice in different soil moisture condition in Uganda field

    Keisuke Hatanaka, Shin Yabuta, Minoru Yoshino, Jun-Ichi Sakagami

  • 2019年韓国作物学会秋季大会講演会・国際フォーラム優秀口頭発表賞

    2019.9   Korean Society of Crop Science  

    Keita Goto, Shin Yabuta, and Junichi Sakagami

    　More details

    Award type：International academic award (Japan or overseas)  Country：Korea, Republic of

  • 2019韓国作物学会春季大会優秀口頭発表賞

    2019.4   Korean Society of Crop Science  

    Ju-Young Choi, Seong-Woo Cho, Jae-Buhm Chun, Soo Jeong Kwon, Swapan Kumar Roy, Jwa-Kyung Sung, Sun-Hee Woo, Jun-Ichi Sakagami

    　More details

    Award type：International academic award (Japan or overseas)  Country：Korea, Republic of

  • Award of Best Presentation

    2019.4   Korean Crop Science Society   Morpho-physiological response of common buckwheat to flooding stress

    SAKAGAMI Junichi

  • 日本熱帯農業学会125回講演会優秀口頭発表賞

    2019.3   日本熱帯農業学会  

    中尾祥宏，坂上潤一

    　More details

    Award type：International academic award (Japan or overseas)  Country：Japan

  • 日本熱帯農業学会125回講演会優秀ポスター発表賞

    2019.3   日本熱帯農業学会  

    岩田晋子，坂上潤一

    　More details

    Award type：International academic award (Japan or overseas)  Country：Japan

  • Award of Best Poster Presentation

    2019.3   Japanese Society for Tropical Development   Aerenchyma formation and ROL barrier under complete submergence in rice

    SAKAGAMI Junichi

  • Award of Best Oral Presentation

    2019.3   Japanese Society for Tropical Development   Risk of application of primed rice seed in rainfed upland

    SAKAGAMI Junichi

  • SAFOSS2018 Best Presenter

    2018.11   Sustainable Agriculture for Food Security and Sovereignty  

    Erna Siaga, Jun-Ichi Sakagami, Benyamin Lakitan, Shin Yabuta, Hasbi Hasbi, Siti Masreah Bernas, Kartika Kartika, Laily Ilman Widuri

    　More details

    Award type：International academic award (Japan or overseas)  Country：Indonesia

  • 2018年韓国作物学会春季大会優秀発表賞

    2018.10   Korean Society of Crop Science  

    Jun-Ichi Sakagami

    　More details

    Award type：International academic award (Japan or overseas)  Country：Korea, Republic of

  • Award of Best Presentation

    2018.10   Korean Crop Science Society   Ratoon cropping system as an advanced rice production in Asia

    SAKAGAMI Jun-Ichi

  • Award of Best Presentation

    2018.9   1st INTERNATIONAL CONFERENCE ON SUSTAINABLE AGRICULTURE FOR FOOD SECURITY AND SOVEREIGNTY   Morpho-physiological responses of chili peppers (Capsicum annuum L.) exposed to short-term water saturated rhizosphere

    SAKAGAMI Junichi

▼display all

Research Projects

  • トウガラシ類研究

    2018.7 - 2019.3

    国立研究開発法人 農業・食品産業技術総合研究機構  革新的技術開発・緊急展開事業(うち技術開発・成果普及等推進事業) 

    坂上 潤一

    　 More details

  • トウガラシ類研究

    2018.4 - 2019.3

    農林水産省  革新的技術開発・緊急展開事業(うち技術開発・成果普及等推進事業) 

    　 More details

    Grant type：Competitive

  • 酸化型グルタチオンを用いた先進的肥培管理方法の開発

    2018.3

    民間企業  一般受託研究 

  • むらづくり活動の活性化に係る調査

    2017.5 - 2019.3

    地方自治体  一般受託研究 

  • トウガラシ研究ネットワーク

    2016.11 - 2020.3

    農林水産省農林水産技術会議事務局  研究ネットワーク形成事業 

    坂上 潤一

    　 More details

  • 気象災害に強く安定多収なサトウキビ適正品種の導入と省力低コスト生産技術の確立

    2016.4 - 2019.3

    農林水産省  革新的技術開発・緊急展開事業（うち地域プロジェクト） 

    　 More details

    Grant type：Competitive

  • 気象災害に強く安定多収なサトウキビ適正品種の導入と省力低コスト生産技術体系の確立

    2016.4 - 2019.3

    国立研究開発法人農業・食品産業技術総合研究機構  革新的技術開発・緊急展開事業（うち地域プロ） 

    坂上 潤一

    　 More details

  • トウガラシ研究ネットワーク形成

    2016.4 - 2017.3

    農林水産省  戦略的技術開発体制形成事業（うち研究ネットワーク形成事業） 

    　 More details

    Grant type：Competitive

  • 種子島におけるサトウキビ栽培技術の適正化

    2015.4 - 2018.3

    民間企業  一般受託研究 

  • 鹿児島県におけるトウガラシ生産体系の確立

    2015.4 - 2017.3

    民間企業  一般受託研究 

  • アジアの洪水常襲地に適した持続的作物栽培体系の開発

    2012.4 - 2016.3

    科学研究費補助金  基盤研究(B)

  • 西アフリカのコメ生産制限要因解明のための遺伝型・環境型相互解析手法の導入と解析

    2008.4 - 2012.3

    科学研究費補助金  基盤研究(B)

  • アフリカにおけるイネの遺伝型・環境型相互作用の解析

    2008.4 - 2011.12

    文部科学省  科学研究費補助金 

    　 More details

    Grant type：Competitive

  • ナミビア国半乾燥地域におけるトウジンビ栽培体系下での氾濫水利用型粗放稲作の導入

    2004.4 - 2008.3

    科学研究費補助金  基盤研究(B)

▼display all

Other research activities

  • 熱帯作物ネットワーク

    2019.10

  • トウガラシネットワーク

    2015.4