The Genetic diversity assessment of new potato varieties of different maturity groups by SSR markers

Abstract

The purpose of study was to assess the genetic diversity of potato varieties of different maturity groups by SSR markers. Twenty-four potato varieties of different maturity groups (very early, yearly, medium, late) were investigated by 8 SSR markers (STM0019, STM3009, STM2005, STM2028, STM3012, STM3023, STM5136, STM5148) for genetic diversity assessment. To assess the genetic diversity of studied varieties, the cluster analysis was performed and the genetic distances between varieties were determined.

As results of PCR analysis from 6 to 10 alleles were determined with an average of 7.88 alleles. The most polymorphic marker was STM2028 with PIC 0.89. The lowest value of PIC (0.78) was obtained for STM3012 marker. For other studied markers values of PIC were from 0.82 to 0.88. It was found, that the most similar varieties are varieties with genetic distance 3.74: Pravda and Riviera, Pravda and Vzirets. The most different varieties turned out to be Vzirets and Lilly, ESMEE and Opilla varieties with genetic distance 6.00. Thus, it was found that the major of studied varieties formed cluster grouts according their maturity groups.