Genetic diversity center of cultivated soybean (Glycine max) in China - New insight and evidence for the diversity center of Chinese cultivated soybean
文献类型: 外文期刊
作者: Wang Li-xia 1 ; Lin Fan-yun 2 ; Li Lin-hai; Li Wei; Yan Zhe; Luan Wei-jiang; Piao Ri-hua; Guan Yuan; Ning 1 ;
作者机构: 1.Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Key Lab Germplamsm Utilizat, Minist Agr,Inst Crop Sci, Beijing 100081, Peoples R China
2.Northwest A&F Univ, Coll Agr, Yanglin 712100, Peoples R Ch
关键词: Glycine max;genetic resources;SSRs;diversity center;domestication
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2016 年 15 卷 11 期
页码:
收录情况: SCI
摘要: Information on the center of genetic diversity of soybean (Glycine max) will be helpful not only for designing efficient strategies for breeding programs, but also for understanding the domestication and origin of this species. Here, we describe an analysis of genetic diversity based on simple-sequence repeat (SSR) variations within a core collection of 2111 accessions of Chinese soybean landraces. Prior to the diversity assessment, the geographic origin of each accession was mapped. The map was then divided into grids each 2.5 degrees in latitude and 5 degrees in longitude. We found two regions that had higher number of alleles (NA) and greater polymorphic information content (PIC) values than the others. These regions are adjacently located within grid position of 30 degrees-35 degrees Nx105 degrees-110 degrees E, which includes the valley of the middle and lower reaches of the Wei River, and the valley of the upper reaches of the Hanjiang River. It was also observed that in many regions, genetic diversity decreased with the increase in distance from the center. Another region, in northern Hebei Province (115 degrees-120 degrees Ex40 degrees-42.5 degrees N), was observed having higher diversity than any surrounding regions, indicating that this is a sub-center of soybean diversity. Based on the presented results, the domestication and origin of soybean are also discussed.
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