Heterotic response of 50 crosses from 10 lines x 5 testers mating design was worked out over mid parent, better parent and best check for the disease maydis leaf blight and grain yield in maize. Only eight crosses showed standard heterosis for grain yield and disease resistance over the best check Pratap for disease resistance and 23 crosses showed standard heterosis over the best check KH 510. Heterotic response obtained over better parents were more realistic.
Maize, heterosis, Maydis leaf blight, yield
