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A community resource for exploring and utilizing genetic diversity in the USDA pea single plant plus collection

Horticulture Research 2017年第1期4卷 293-300页

作者： William L.Holdsworth elodie gazave Peng Cheng James R.Myers Michael A.Gore Clarice J.Coyne Rebecca J.McGee Michael Mazourek Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthaca14853NYUSA Department of Crop and Soil Sciences Washington State UniversityPullman99164WAUSA Department of Horticulture Oregon State UniversityCorvallis97331ORUSA US Department of Agriculture Agricultural Research ServiceWestern Regional Plant Introduction StationPullman99164WAUSA US Department of Agriculture Agricultural Research ServiceGrain Legume Genetics and Physiology Research UnitPullman99164WAUSA Rupp Seeds WauseonOH 43567USA

Globally,pea(Pisum sativum L.)is an important temperate legume crop for food,feed and fodder,and many breeding programs develop cultivars adapted to these *** order to assist pea development efforts,we assembled the USDA Pea Single Plant Plus Collection(PSPPC),which contains 431 *** accessions with morphological,geographic and taxonomic *** collection was characterized genetically in order to maximize its value for trait mapping and genomics-assisted *** that end,we used genotyping-by-sequencing—a cost-effective method for de novo single-nucleotide polymorphism(SNP)marker discovery—to generate 66591 high-quality *** data facilitated the identification of accessions divergent from mainstream breeding germplasm that could serve as sources of novel,favorable *** particular,a group of accessions from Central Asia appear nearly as diverse as a sister species,***,and subspecies,*** *** genotypes can be paired with new and existing phenotype data for trait mapping;as proof-of-concept,we localized Mendel’s A gene controlling flower color to its known *** also used SNP data to define a smaller core collection of 108 accessions with similar levels of genetic diversity as the entire PSPPC,resulting in a smaller germplasm set for research screening and evaluation under limited *** together,the results presented in this study along with the release of a publicly available SNP data set comprise a valuable resource for supporting worldwide pea genetic improvement efforts.

关键词： breeding cultivar utilizing

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