Abstract
The article presents the results of analysis of the variability of 23 allozyme loci in 10 populations of Siberian Stone pine. Populations from South Siberia mountain regions had higher percentage of polymorphic loci in averageand mean number of alleles per loci (P99% = 44,57 %, NA = 1,543 ± 0,014) compared to Ural populations (P99%=29,57%,NA = 1,348 ± 0,015). The average values of the observed and expected heterozygosity in the populations of the Altai-Sayan (HO = 0,087 ±0,007 and HE = 0,090 ± 0,004) and the Ural mountain region (HO = 0,083 ± 0,008 и HE = 0,082 ± 0,005)were close. About 8.4% of the total genetic diversity is due to differences between the studied populations. The results ofmultidimensional data analysis confirm the existence of the Altai-Sayan and Ural refugia in the post-glacial period andthe dispersal of Siberian stone pine to the North from the Ural glacier refugium.
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