The main parameters of genetic variability have been determined in an isolated natural Scotch pine population from Chita oblast' (Tsasuchei Forest) by analysis of 19 genes coding for nine enzymes: GDH, IDH, LAP, PGM, AAT, ADH, MDH, 6-PGD, and DIA. Polymorphic genes constituted 63.2% of all structural genes studied in the population at the 99% polymorphism criterion. The mean number of alleles per locus was 1.63. The observed and expected heterozygosities were 0.237 and 0.251, respectively. These estimates are close to the corresponding mean values for Scotch pine according to the data on 18 or more structural genes.
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