Sorghum is an important crop for human consumption as well as animal feed. Grey leaf spot incited by Cercospora sorghi Ellis and Everh is the most serious disease as it causes premature drying and defoliation of leaves, reduces the quality and quantity of green fodder. The most efficient and economical way of disease management is the production of resistant cultivars development. A total of eighty five sorghum lines were evaluated for their reaction against grey leaf spot at research farm of Forage Section, CCS Haryana Agricultural University, Hisar during Kharif 2022. The germplasm lines were categorized as highly resistant (HR), resistant (R), moderately resistant (MR), susceptible (S) and highly susceptible (HS) according to the standard rating scale (1-9). Out of the eighty five germplasm lines screened, twenty three, twelve, twenty two, twenty five and three germplasm lines showed highly resistant, resistant, moderately resistant, suscptible and highly susceptible reactions, respectively. The resistant lines could be utilized in breeding programs for development of varieties of sorghum resistant against grey leaf spot disease.

Grey leaf spot, Cercospora sorghi, Germplasm, Resistant

A total of eighty five sorghum lines were screened for their relative resistance/ tolerance against grey leaf spot under field conditions at forage section, CCS HAU, Hisar during Kharif, 2022. Out of 85 genotypes screened, twenty three lines namely SOR 13853, SOR 13874, SOR 13924, SOR 13940, SOR 14379, SOR 14390, SOR 14391, SOR 14393, SOR 14217, SOR 14231, SOR 14251, SOR 14255, SOR 14268, SOR 14274, SOR 14170, SOR 14193, SOR 14203, SOR 14214, SOR 14399, SOR 14453, SOR 14479, SOR 14414, SOR 13620 showed highly resistant reaction against grey leaf spot of sorghum. Twelve, twenty two, twenty five and three sorghum lines showed resistant, moderately resistant, susceptible and highly susceptible reactions, respectively. The sources of highly resistant, resistant and moderately resistant lines need to be tested for their authenticity with artificial inoculation techniques and if they show resistant reaction may could be utilized in resistance breeding program for at least development of tolerant varieties of sorghum against grey leaf spot disease.

Janvi Malik, Manjeet Singh, Pooja Sangwan, Pummy Kumari, Vinod Kumar Malik, Niharika Sheoran and Gargee Gill (2023). Evaluation of Germplasm Lines of Sorghum against Grey Leaf Spot incited by Cercospora sorghi Ellis and Everh. Biological Forum – An International Journal, 15(8): 398-401.