.:VESTNIK NESC FEB RAS - 2013, #2, P. 74-85:.
Genetic Polymorphism of Siberian Spruce Picea obovata (Pinacea) Populations in the Asian Part of the Habitat
© 2013 A. N. Kravchenko, A. Ya. Larionova, A. K. Ekart
E-mail: 
Based on the analysis of 22 allozyme loci, the genetic structure for nineteen natural populations of the Siberian spruce Picea obovata (Pinacea) from the Asian part of Russia was investigated. Included in the study part of the habitat covers the vast territory, within which the main forest-vegetable regions of Siberia are presented. On average 63.4% of loci analyzed are polymorphic in tested populations of the Siberian spruce. The mean number of alleles per locus is 1.88, the effective number of alleles – 1.25. The observed and expected heterozygosities are equal to 0.160 and 0.161, respectively. More than 97% of revealed variability is realized within the populations, while the proportion of interpopulation variability amount to 2.5% only (Fst = 0.025). Genetic distances (D) between the populations are ranged from 0.002 to 0.014 and averaged 0.005. The data obtained testify to a generally low level of interpopulation differentiation of the Siberian spruce in the studied part of the habitat. Most of spruce populations investigated in various forest-vegetable regions do not differ in frequencies of alleles included in the study of isoenzyme loci. Statistically significant distinctions in the genetic structure are observed in general among spruce populations located in forest-vegetable regions with significantly different conditions of growing. The comparative analysis of spruce populations located within individual forest-vegetable areas showed that the mountain populations from the Altai-Sayan mountain-taiga area are more differentiated (D = 0.008) in comparison with populations from other forest-vegetable areas (D = 0.002–0.005).
Keywords: Siberian spruce, Asian part of area, genetic structure, genetic diversity, spatial differentiation.