Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Society for Tropical Agriculture  

<p>This experiment was aimed at establishing the method of producing large fruits of loquat (<i>Eriobotrya japonica</i> (Thunb.) Lindl.). Using ‘Nagasakiwase’ (open field cultivation), ‘Mogi’ (open field cultivation), and ‘Natsutayori’ (plastichouse cultivation), we investigated the effects of different branch managements (only central shoot, central shoot + one lateral shoot, and central shoot + two lateral shoots) and flower cluster thinning rates (50%, 30%, and non-treatment) on fruit weight, branch structure and the canopy of the loquat. All cultivars in the treatment of a few bearing shoots had the largest diameters, fruit weight and number of leaves in both that and per fruit than other treatments. ‘Nagasakiwase’ at 50% and ‘Natsutayori’ at 30% flower cluster thinning rates had heavier fruit weights and larger bearing shoot diameters than other treatments. There was no significant difference in any of the treatments of ‘Mogi’. The relationship between the branch structure and fruit weight of all the cultivars was under r = 0.54, or uncorrelated. In ‘Mogi’ at 50% flower cluster thinning rate, plant coverage rate was low, and the sky factor area rate and photosynthetic active radiation (PAR) were high, but the leaf area index was the same in all treatments. All branch managements of ‘Mogi’ had the same plant coverage rates, sky factor area rate and PAR. Indicating that in order to produce large loquat fruits, it is effective to have fewer branches and improved light from the receiving environment of the canopy with a low fruit cluster rate.</p>

DOI： 10.11248/nettai.15.86

Language：Japanese   Publisher：DNA research : an international journal for rapid publication of reports on genes and genomes  

Acerola (Malpighia emarginata DC.) is a tropical evergreen shrub that produces vitamin C-rich fruits. Increasing fruit nutrition is one of the main targets of acerola breeding programs. Genomic tools have been shown to accelerate plant breeding even in fruiting tree species, which generally have a long-life cycle; however, the availability of genomic resources in acerola, so far, has been limited. In this study, as a first step toward developing an efficient breeding technology for acerola, we established a chromosome-scale genome assembly of acerola using high-fidelity long-read sequencing and genetic mapping. The resultant assembly comprises 10 chromosome-scale sequences that span a physical distance of 1,032.5 Mb and contain 35,892 predicted genes. Phylogenetic analysis of genome-wide SNPs in 60 acerola breeding materials revealed 3 distinct genetic groups. Overall, the genomic resource of acerola developed in this study, including its genome and gene sequences, genetic map, and phylogenetic relationship among breeding materials, will not only be useful for acerola breeding but will also facilitate genomic and genetic studies on acerola and related species.

DOI： 10.1093/dnares/dsae029

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PubMed

Authorship：Last author   Language：Japanese   Publishing type：Research paper (bulletin of university, research institution)  

Language：Japanese  

Language：English   Publisher：Japanese Society for Tropical Agriculture  

DOI： 10.11248/jsta.65.122

Event date： 2024

Language：Japanese   Presentation type：Poster presentation  

Venue：千葉県   Country：Japan  

Event date： 2024

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：千葉県   Country：Japan  

Event date： 2023

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：東京都   Country：Japan  

Event date： 2019

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：東京都   Country：Japan  

Event date： 2013

Language：Japanese   Presentation type：Poster presentation  

Venue：東京都   Country：Japan