Genetic diversity and population structure of vegetable soybean (Glycine max (L.) Merr.) in China as revealed by SSR markers

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• 作者：Dekun Dong (1)
  Xujun Fu (1)
  Fengjie Yuan (1)
  Pengyin Chen (2)
  Shenlong Zhu (1)
  Baiquan Li (1)
  Qinghua Yang (1)
  Xiaomin Yu (1)
  Danhua Zhu (1)
  
• 关键词：Genetic diversity ; Glycine max (L.) Merr. ; Population structure ; Simple sequence repeat ; Vegetable soybean
• 刊名：Genetic Resources and Crop Evolution
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：61
• 期：1
• 页码：173-183
• 全文大小：553 KB
• 作者单位：Dekun Dong (1)
  Xujun Fu (1)
  Fengjie Yuan (1)
  Pengyin Chen (2)
  Shenlong Zhu (1)
  Baiquan Li (1)
  Qinghua Yang (1)
  Xiaomin Yu (1)
  Danhua Zhu (1)
  
  1. Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, 198#, Shiqiao Rd, Hangzhou, 310021, Zhejiang, People’s Republic of China
  2. Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR, 72701, USA
  
• ISSN：1573-5109

文摘

Vegetable soybean is a kind of value-added specialty soybean serving as vegetable or snacks. Understanding the genetic structure of vegetable soybean is a key point for further utilization in breeding programs. In the present study, the genetic structure and diversity of 100 vegetable soybean accessions planted in China was analyzed using 53 simple sequence repeat (SSR) markers. A total of 296 alleles were detected with an average of 5.6 alleles per SSR locus. The polymorphism information content (PIC) values of SSR markers ranged from 0.074 to 0.831, with an average of 0.573. Nei’s genetic distance between accessions ranged from 0 to 0.9434 with an average of 0.6286. These vegetable soybean germplasms could be divided into 8 subgroups based on STRUCTURE analysis, or 11 subgroups based on unweighted pair group method with arithmetic average (UPGMA) cluster. Further comparison showed that the UPGMA subgroups and STRUCTURE subgroups were in fact highly consistent. Germplasms in each classified groups showed great consistency with their origins, seed coat colors or pedigrees. Genetic relationships among germplasm panels that initially came from different geographical regions were also analyzed. Germplasm panels from China Mainland, Taiwan Island and Japan were highly similar to each other with the similarities of over 98?%. Molecular data and cluster analysis also showed that germplasms from China Mainland are more diverse than those from other areas. These results gave us a deep insight into the genetic structure of vegetable soybeans in China and will help us to improve the breeding strategies.