GENETIC-STRUCTURE AND TAXONOMIC POSITION OF PINUS-ULIGINOSA NEUMANN POPULATION FROM WIELKIE-TORFOWISKO-BATOROWSKIE IN STOLOWE MTS (LOCUS-CLASSICUS)

Genetic structure of Pinus uliginosa Neumann from Wielkie Torfowisko B atorowskie peat-bog (locus classicus) was studied by means of isoenzym e variability and compared with genetic structure of P. mugo Turra fro m Tatra Mts and P. sylvestris populations from Klodzka Valley and Czer sk. The level of genetic variability in the population of P. uliginosa (heterozygosity, genotypic polymorphism) was similar to that in popul ations of P. mugo, with an excess of homozygosity in relation to Hardy -Weinberg equilibrium. An average number of alleles per locus in popul ation of P. uliginosa is the same as in the studied P. sylvestris popu lations, but the average number of genotypes is slightly lower. Howeve r, populations of P. mugo from montaneus stands in Tatra Mts. are char acterized by a higher number of alleles per locus than that in P. ulig inosa population. In populations of P. mugo from peat-bogs, a lower nu mber of alleles and genotypes is noted than in P. uliginosa population . The coefficients of genetic similarity (Nei and Hedrick) show the di stinctly separate character of P. uliginosa as compared to P. sylvestr is and loose relationship of this taxon to P. mugo. Also the measure o f genetic differentiation of populations (G(ST)) confirms the specific ity of this pine taxon.