The effect of longterm storage on the viability and properties of Alternaria alternata, Bipolaris sorokiniana and Fusarium solani strains of the phytopathogenic microorganisms state collection of ARRIP

Relevance. Under conditions of prolonged storage of fungi on a nutrient agar medium, their pathogenic properties are gradually lost. Preservation of collection material with unchanged pathogenic properties is necessary for correct research, including the development of biological protection methods, monitoring of pathogen development dynamics, assessment of their virulence and aggressiveness, choice of selection material.