Genetic Diversity Analysis of Cultivated Potato Varieties in Enshi
In order to clarify the genetic diversity of 16 potato varieties independently bred in Enshi are-a,9 pairs of SSR primers were selected to analyze the genetic diversity of 16 potato varieties inde-pendently bred in Enshi area.The results showed that 117 loci were amplified by 9 pairs of SSR prim-ers,114 of which were polymorphic loci,and 13 alleles and 12.67 polymorphic loci were amplified by each pair of SSR primers.The genetic distance of 16 potato varieties ranged from 0.181 8 to 0.686 7,and the average genetic distance was 0.378 0.When the similarity coefficient was around 0.553.16 varieties could be divided into three categories,and Category Ⅰ contained only one variety(E potato No.1).Category Ⅱ including 6 varieties(E potato No.4,E potato No.5,E potato No.6,E potato No.15,E potato No.8,E potato No.13);Category Ⅲ including 9 varieties(E potato No.2,E potato No.3,E potato No.9,E potato No.10,E potato No.7,E potato No.11,E potato No.12,E potato No.14,E potato No.16).The results provided reference for the selection of potato breeding parents and the u-tilization of heterosis in the southern winter cropping area.
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