Identification of maize (Zea mays L.) germplasms for resistant sources against turcicum leaf blight disease

Maize (The present studies were aimed to evaluate 302 maize entries for resistance against tturcicum leaf blight (TLB) disease in randomized blockdesign using a check at Agricultural Research Station, Karimnagar, Telangana State, India during rabi (November-2019-Febrauary-2020 and kharif (July- 2020-October-2020). During rabi, 2019–2020, out of 205 lines, 5 promising entries viz., IB-140, DHM-121, 17x605-1-2, 107×BML-7 and 186×BML-32 were identified with disease score 1 (resistant), 27 lines were recorded as moderately resistant, 2 lines were recorded as moderately susceptible and CM-202 entry was recorded 74.30% diseased leaf area (% DLA). During kharif, 2020, out of 98 lines, 41 lines viz., 70531×CML156, 70530×BML45, 70530x11-2-1, 70425×BML6, 72554x50-2-1, 72555×BML7, 72343x50-2-1, 72336x11-2-1, 72336×CML156, 72343×BML45, 72603x66-1-1, 72513×CML156, 72343x66-1-1, 70531×BML45, 722603×CML-156, 72555x66-1-1, 72336×BML6, 70439×CML156, 70576x50-2-1, 72555x605-1-1, 72555×BML6, 72336x50-2-1, 72374×BML7, 72555×CML156, 72555x33-1-4, 70425×BML45, 72520×CML156, 72504×CML156, 70474x50-2-1, 72568×BML-14, 72686xPFSR3, 72260×CML156, 66-1-1, 524-3-2, 31-2-4, 207-1-3, 244-1-2, 540-2-3, 388-2-1, KML225 and 186-4-3 were identified as resistant lines to turcicum leaf blight disease (score 1), three lines were moderately resistant, 1 line CM-202 was noticed with high 72.46% diseased leaf area and severely affected by turcicum leaf blight and rated as susceptible during kharif, 2020.