Abstract
Based on electrophoretic analysis of 21 isozyme loci controlling 10 enzyme systems, the intra- and inter-population variation was studied in two peat-bog and three dry-meadow populations of the dwarf mountain pine Pinus mugo Turra from the highlands of the Ukrainian Carpathians. In the studied samples (a total of 164 trees), on average 62% of the studied genes were polymorphic; the mean heterozygosity was 21.3%. The dry-meadow populations differed from the peat-bog populations by allele and genotype diversity and by heterozygosity although the indices characterizing population heterogeneity (Fst and Gst) were small (0.027 and 0.032, respectively). Nei's genetic distances between the populations ranged of 0.011 to 0.032 with the mean of 0.018.
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