Screening of Promising Genotypes of Isabgol against Downy Mildew Disease (Peronospora plantaginis)

Isabgol (Plantago ovata) is an important Rabi crop grown in dry regions of India. It plays an important role in reducing stomach disorders. The crop of Isabgol suffers with number of diseases. Downy mildew disease of Isabgol caused by Peronospora plantaginis is one of the wide spread and destructive diseases in India. The symptoms of downy mildew of Isabgol appear 30-35 days after sowing. As the disease progressed, the leaves become necrotic and started drying from the tip to backward and plant become stunted. The genotype screening is an eco-friendly method for management of plant diseases; hence an experiment was conducted to identify the resistant genotypes against downy mildew of Isabgol under natural field condition. Out of 36 genotypes, 8 genotypes were found resistant, 15 genotypes were found moderately resistant, 8 genotypes were found moderately susceptible and 5 genotypes were found susceptible against downy mildew of Isabgol.