Screening of Sunflower Germplasm for Alternaria Leaf Spot and Powdery Mildew Diseases Under Field Conditions

Total 100 germplasm lines each were screened during two consecutive years, 2011 and 2012 at RARS, Nandyal against Alternaria leaf spot and Powdery mildew diseases to observe disease reaction. In 2011, 83 lines germinated, butnoneofthem wasfoundtoberesistant to Alternarialeafspot, however, five lines were moderately resistant to Alternaria and powdery mildew diseases. During 2012, sixty nine lines were moderately resistant while one is resistant to Alternaria leaf spot. Thegermlasm, GMU-1004 was found to be free from powdery mildew disease, three lines were resistant and fifty eight lines were found moderately resistant.