Population genetic structure and classification of cultivated and wild pea (Pisum sp.) based on morphological traits and SSR markers  

作　　者：Rong Liu Yu-Ning Huang Tao Yang Jin-Guo Hu Hong-Yan Zhang Yi-Shan Ji Dong Wang Guan Li Chen-Yu Wang Meng-Wei Li Xin Yan Xu-Xiao Zong 

机构地区：[1]National Key Facility for Crop Gene Resources and Genetic Improvement,Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China [2]USDA,Agricultural Research Service,Western Regional Plant Introduction Station,Washington State University,Pullman,WA 99164,USA

出　　处：《Journal of Systematics and Evolution》2022年第1期85-100,共16页植物分类学报（英文版）

基　　金：This study was supported by the following grants:National Natural Science Foundation of China(No.31801428);the China Agriculture Research System from the Ministry of Agriculture and Rural Affairs of China(CARS-08);the Crop Germplasm Resources Protection(2019NWB036-07);the Agricultural Science and Technology Innovation Program(ASTIP)in CAAS,National Infrastructure for Crop Germplasm Resources project from the Ministry of Science and Technology of China(NICGR2019);the National Key Research and Development Program of China(2017YFE0105100).

摘　　要：Pea(Pisum sativum L.)is an important legume crop that is widely grown worldwide for human consumption and livestock feed.Despite extensive studies,the population genetic structure and classification of cultivated and wild pea(Pisum sp.)remain controversial.To characterize patterns of genetic and morphological variation and investigate the classification of Pisum,we conducted comprehensive population genetic analyses for 323 accessions from cultivated and wild pea,representing three species of Pisum and utilizing 34 morphological traits and 87 polymorphic simple sequence repeat markers.First,we identified three distinct genetic groups among all samples.Group Ⅰ was primarily composed of Pisum fulvum,Pisum abyssinicum,and some wild P.sativum accessions,whereas Groups Ⅱ and Ⅲ consisted of the two genetic groups under R satfvum that represented different geographic distributions of cultivated pea.Analyses of morphological variation revealed significant differences among the three species.Second,among pea germplasms representing eight taxa of Pisum,P.fulvum and R abyssinicum possessed unique genetic backgrounds and morphological characteristics,corroborating their independent species status.The intraspecific subdivisions of P.sativum described by some authors were not supported in this study,with the exception of several genotypes of P.sativum subsp.elatius that clustered with P.fulvum and P.abyssinicum.Finally,we confirmed that the Chinese pea germplasm was genetically distinct and could be divided into two genetic groups,each of which included both spring-sowing and autumn-sowing ecotypes.These results provide a robust foundation for understanding pea domestication and the utilization of wild genetic resources of pea.

关 键 词：pea(Pisum sativum L.) Pisum L. population genetic structure classification SSR markers morphological traits 

分 类 号：Q94[生物学—植物学]