Biodiversity Science ›› 2011, Vol. 19 ›› Issue (1): 17-23.doi: 10.3724/SP.J.1003.2011.07155

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Genetic diversity in adzuki bean and its relatives based on SSR markers

Lixia Wang, Xuzhen Cheng*, Suhua Wang   

  1. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081
  • Received:2010-06-08 Revised:2010-08-10 Online:2011-04-01
  • Xuzhen Cheng E-mail:chengxz@caas.net.cn

In order to enhance the use of genetic resources of Vigna in breeding of adzuki bean, genetic di-versity and relationship were analyzed based on 87 SSR markers. The results showed 667 alleles were de-tected at these SSR loci among 112 accessions of Vigna plants, including 80 cultivated, 22 wild adzuki bean and 10 relative plants. And 75, 71 and 82 were polymorphic in cultivated, wild adzuki bean and relative plants, respectively. Random sampling analysis suggested that the relative plants ranked the first for the av-erage number of alleles per SSR locus, and wild adzuki bean ranked the second, this was agreeable with polymorphism information content (PIC). Cluster analysis divided the cultivated, wild adzuki bean and rela-tive plants into three distinct groups. The genetic background of cultivated adzuki bean basically agreed with their origins. The relative plants could also be divided into three sub-groups, and V. umbellata had different genetic background with other wild species. The present study suggested that wild Vigna had higher genetic variations than cultivated adzuki bean, and could be used to broadening the gene pool of this crop.

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