DIVERSITY AND DISTRIBUTION OF ASCOMYCETES ON THE TERRITORY OF THE KETMEN RIDGE (KAZAKHSTAN)

Abstract The mycobiota of the Ketmen ridge has 151 species belonging to Ascomycota. The аscomycetes are represented by 14 orders from 5 classes. The highest number of orders is characteristic of the class Sordariomycetes. The largest order is the order of Erysiphales from the class Leotiomycetes, with 38 species from 8 genera. The largest genera are Erysiphe (13 species), Podosphaera (9) and Golovinomyces (8). 13 genera have an unclear systematic position. Ascomycetes attack 183 species of vascular plants and mushrooms. The greatest number of species of ascomycetes (109 species) is noted in the steppe belt of the Ketmen ridge: on the northern macroslope 51 species from 44 genera, on the southern macroslope 42 species from 25. The following species are widely distributed in the territory of the study: Erysiphe polygoni, Leveillula taurica, Neoerysiphe galeopsidis and Podosphaera aphanis.ут