Fungus-like organisms of genus Plasmopara (family Pernosporaceae) in conditiins of Belarus

Russian. В результате многолетних исследований в различных фитоценозах на территории Республики Беларусь нами выявлены 22 вида рода Plasmopara J. Schrot, которые паразитировали на 38 видах питающих растений из 7 семейств: Apiaceae, Asteraceae, Geraniaceae, Grossulariaceae, Ranunculaceae, Scrophylariaceae, Vitaceae. Приводится их краткая морфометрическая характеристика, синонимика, указывается местонахождение выявленных грибоподобных организмов и их растения-хозяева.

English. Fungi-like microorganisms of Plasmopara genus (Peronosporaceae family) appear parasites of many species of wild and agricultural plants. Plasmopara causes decline of crop yield and quality of agricultural production and leads to disorders of natural phytocenoses. For the development of effective measures of phytopathogens’ control, evaluation of their species composition, distribution, ecological peculiarities and injuriousness should be carried out. The article presents the results of long-term research aimed on evaluation of different species of Plasmopara J. Schrot genera in phytocenoses of the Republic of Belarus. The research material used for the experimentation is represented with herbarium samples injured with fungi-like microorganisms selected in 1980-2011 in different geobotanical districts of the republic. There have been revealed 22 species of Plasmopara J. Schrot, parasitizing 38 species of host plants of 7 families: Apiaceae, Asteraceae, Geraniaceae, Grossulariaceae, Ranunculaceae, Scrophylariaceae, Vitaceae. The level of injury of the plants with Plasmopara J. Schrot fluctuates from 1 up to 4 grades.