Species composition of fungi of the genus fusarium on crops of spring barley in the central part of russia in the years 2015-2017
The specificity of Fusariumisolates and their frequency of occurrence on barley crops in the Moscow, Tula and Vladimir areas per 2015-2017 were determined. There were received more than 700 isolates belonging 12 Fusarium species. The combinations of Fusarium spp. isolates received from damaged barley in these areas were presented widespread and rare kinds of fungi species. The Fusarium isolates allocated from grains and roots have high uniformity on specific structure to depend upon similarity of soil-climatic conditions of areas and susceptibility of barley cultivars to these fungi. The species incidents allocated from barley roots were similar but from grains they depend on the environmental conditions prevailing during flowering-maturing periods of plants. In state collection there were selected 33 Fusarium spp. strains possessed the stable morphology properties. More pathogenic and toxic strains from them have been recommendedfor creation infectious backgrounds for regional tests of barley cultivars to disease resistance.