Analysis of SSRs Uncovers Hierarchical Structure and Genetic Diversity in Chinese Soybean Landraces  

作　　者：LI Ying-hui Marinus J M Smulders CHANG Ru-zhen QIU Li-juan 

机构地区：[1]The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Lab of Germplasm Utilization, Ministry of Agriculture (MOA)/Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China [2]Plant Research International, Wageningen UR, Wageningen 6700 AA, The Netherland

出　　处：《Agricultural Sciences in China》2010年第12期1739-1748,共10页中国农业科学（英文版）

基　　金：supported by the National Basic Research Program of China (973 Program,2010CB125900 and 2004CB117203);the National Key Technologies R&D Program during the 11th Five-Year-Plan period (2006BAD13B05);the National Natural Science Foundation of China (30490251 and30471096);the Academy and Institute Foundation for Basic Scientific Research in Institute of Crop Sciences,Chinese Academy of Agricultural Sciences

摘　　要：For clarifying the hierarchical patterns of population structure of soybean landraces in China, the seven clusters previously identified using Bayesian clustering of 1 504 soybean landraces based on SSR markers genotyping data were further analyzed. Using the largest value of AK, these landraces could be split into 20 sub-clusters, which was supported by highly significant pairwise Fst-values and generally in accordance with the geographic origin and sowing types. The autumn-sowing types ended up in one distinct sub-cluster from the otherwise summer-sowing type, where the autumn- sowing types are most likely derived from. The division into 20 sub-clusters explained 7.3% of the genetic variation, next to 9.7% present among the seven clusters, 81.1% residing among landraces within sub-clusters, and 1.9% within the landraces. The distribution pattern of genetic diversity among the sub-clusters of each cluster was uneven, with two HSuM sub-clusters （Central China） and some South China sub-clusters showing significantly higher level of genetic diversity.For clarifying the hierarchical patterns of population structure of soybean landraces in China, the seven clusters previously identified using Bayesian clustering of 1 504 soybean landraces based on SSR markers genotyping data were further analyzed. Using the largest value of AK, these landraces could be split into 20 sub-clusters, which was supported by highly significant pairwise Fst-values and generally in accordance with the geographic origin and sowing types. The autumn-sowing types ended up in one distinct sub-cluster from the otherwise summer-sowing type, where the autumn- sowing types are most likely derived from. The division into 20 sub-clusters explained 7.3% of the genetic variation, next to 9.7% present among the seven clusters, 81.1% residing among landraces within sub-clusters, and 1.9% within the landraces. The distribution pattern of genetic diversity among the sub-clusters of each cluster was uneven, with two HSuM sub-clusters （Central China） and some South China sub-clusters showing significantly higher level of genetic diversity.

关 键 词：SOYBEAN LANDRACE hierarchical structure DIVERSITY 

分 类 号：S831.8[农业科学—畜牧学] Q943[农业科学—畜牧兽医]