Genetic diversity of populations of a rare species of Dictamnus gymnostylis Stev. in Bashkir Cis-Urals

We examined genetic diversity in populations of Dictamnus gymnostylis Stev., a rare species growing in the Bashkir Cis-Urals, based on the analysis of 8 gene-enzyme systems and detected a fairly high level of intraspecific genetic diversity and population differentiation. We determined the average number of alleles per locus (A) as 1.57; the portion of polymorphic loci (P ₉₅) as 0.508; the observed heterozygosity (H _o) as 0.139; and the expected heterozygosity (H _e) as 0.169. Of the total genetic diversity, 88.3% stems from variability within populations, and 11.7% is due to variation among populations. The average value for the Nei’s genetic distance (D) constituted 0.028.