Correlations of Heterozygosity with Sexual Type and Sensitivity of
Pinus Sylvestris L. Trees to the Influence of Environmental Factors
I. V. TIKHONOVA
V. N. Sukachev Institute of Forest SB RAS, 660036, Krasnoyarsk, Akademgorodok, 50/28
Keywords: correlations, heterozygosity, sex, sensitivity, Scots pine
Abstract
The correlations of genotype heterozygosity with sex and sensitivity of a tree to the influence of ecological factors were considered. Rather close triple correlation between the considered treats was noted. Wave character of correlation of sex and heterozygosity level with sensitivity of trees to growing conditions can testify the existence of optimal combinations of alleles of homo- and heterozygous loci for the given conditions. They were manifested in lowering of sensitivity of trees to environmental factors at values of heterozygosity 0.125 and 0.375. The influence of heterozygosity of trees on the stability of their sexual type in time was revealed. The pines characterized by the greatest hormonal reorganizations in reply to change of environmental conditions had lower values of heterozygosity.
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