Genetic Diversity of Barley Foliar Fungal Pathogens

Powdery mildew, net blotch, scald, spot barley stripe, and leaf rust are important foliar fungal pathogens of barley. Fungal negatively affect the yield quality in plant. Virulence changes, which can occur various ways, may render resistant plants to susceptible ones. Factors such as mutation, population size random genetic drift, gene genotype flow, reproduction mating systems, selection imposed by major resistance, quantitative resistance diversity pathogenic fungi. The use fungicide or disease-resistant genotypes is an effective method disease control. However, evolutionary potential poses a risk overcome genes plant neutralize applications. affecting pathogen fungus lead emergence more virulent new pathotypes population. Understanding factors evolution, monitoring biology, will help develop control strategies.