Molecular identification and comparative characterization of Fusarium isolates, obtained from potato plants

Abstract

The paper analyzes fungi of the genus Fusarium isolated from plants and tubers of different potato cultivars grown on the territory of Tatarstan. It was established that the majority of the strains belonged to the Fusarium oxysporum species complex. Isolates obtained from the root necks of wilting potato plants and conditionally healthy tubers are, to varying degrees, capable of causing dry rot of tubers during artificial inoculation. Also, the virulence of the strains does not correlate with extracellular proteolytic activity. It was shown that the tubers of the Zhukovskij rannij cultivar are most sensitive to fusaria infections, in contrast to the Red Scarlet and Reggi cultivars.