Natural populations of Schizophyllum commune Fr. in the north of Donetsk Region demonstrate high polymorphism (75 %). An average of three alleles per locus was established. The excess of heterozygotes suggests an important role of the sexual process in the exchange of genetic information, and the intensity of gene flow allows to concentrate 96 % of the genetic diversity of the species in each of the studied population. Cluster analysis revealed isolation of populations within the area near Dronovka village, due to mechanical interference of the spread of genetic material. Low levels of fixation index (F_st) suggests that we are dealing with a single population of Schizophyllum commune.

Keywords: Schizophyllum commune, population, enzyme system, alleles

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