SUMMARY. Comparative studies of genetic variability were undertaken for 12 allozyme loci selections of trees and embryos of seed, and also for the crossing systems in five populations of Koch pine of (Pinus kochiana Klotzsch ex Koch) in Crimea. It was shown that in seed embryos the allelic variety peculiar to the maternal plants was restored, however the level of the available (НО) heterozygosity was considerably lower, 0,286 and 0,189 respectively. For the embryos unlike the trees, in the majority of the analyzed loci the considerable divergence was specific in the actual distribution of genotypes from the theoretically expected according to Hardy-Weinberg law. The proportion of cross pollination at the unilocal (ts) estimation varied from 0,384 to 0,673 in the populations, while at the multilocal ones (tm) it was 0,639–0,841.
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