Genetic diversity center of cultivated soybean(Glycine max) in China——New insight and evidence for the diversity center of Chinese cultivated soybean
Genetic diversity center of cultivated soybean(Glycine max) in China——New insight and evidence for the diversity center of Chinese cultivated soybean作者机构：The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Germplamsm UtilizationMinistry of Agiculture/Institute of Crop SciencesChinese Academy of Agricultural Sciences College of AgricultureNorthwest A & F University College of AgricultureNortheast Agricultural University College of Science and TechnologyXinjiang Agricultural University Department of AgronomyJilin Agricultural University Department of AgronomyLiaoning Agricultural University
出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)
年 卷 期：2016年第15卷第11期
页 面：2481-2487页
核心收录：
基 金：supported by the National Basic Research Program of China(973,G1998010203 and 2004CB117203) the Agricultural Science and Technology Innovation Program(ASTIP)of Chinese Academy of Agricultural Sciences
主 题：Glycine max genetic resources SSRs diversity center domestication
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 2 111 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° in latitude and 5° 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°–35°N×105°–110°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°–120°E×40°–42.5°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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