Abstract
The genetic structure and diversity of 148 soybean genotypes were analyzed using 26 simple sequence repeat (SSR) markers. SSR analysis showed distinctive polymorphism among the 148 lines. A total of 71 alleles were detected with an average of 2.8 alleles per SSR locus. Polymorphism information content varied from 0.118 to 0.699 with an average of 0.369. These soybean genotypes were divided into 3 subgroups based on STRUCTURE analysis. Further comparison showed that the arithmetic average (UPGMA) and STRUCTURE subgroups in fact were highly coherent, as genotypes in their subsequent classified group exhibited consistency with their origins or pedigree. This analysis provided a deep insight into the genetic structure of soybeans in India and will help us to improve the breeding strategies.
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