Abstract :
Determination of heterosis in maize hybrids is necessary for their commercial exploitation. Data derived from several experiments namely Coordinated Varietal Trial-Hybrid (CVTH), Diallel Crosses, Observation Nurseries (OBN), Top Crosses and Test Crosses conducted at Rampur (Chitwan) and Parwanipur (Bara) from 2004/05 to 2008/09 were complied to determine heterosis and identify high yielding hybrids. The maize hybrids namely RML-4/RML-7, RML-5/NML-1, NML-2/RML-6, RML-6/RML-7, RML-5/RL-47, RML-8/RL-47, RML-5/RML-8, NML-1/RML-17, RML-7/RML-18, RML-6/RML-18 and RML-5/NML-1 produced high heterosis (greater than 40%) indicating these hybrids superior for commercial cultivation.
