Trends in Biosciences

The experimental material consisting of 10 restorers, their 45 cross combinations and one standard check hybrid were evaluated in Randomized Block Design. Analysis of variance revealed significant differences among genotypes for most of the traits under study in all three environments. Parent J2483 was found to be a good general combiner for grain yield per plant, earhead weight per plant, number of productive tillers per plant, average internode length, lysine content, panicle harvest index and shoot length at harvest. On the other hand, genotype J 2474 was one of the parents of top three ranking hybrids considering sca effect for most of quality traits in almost all three environments. Similarly, the genotype J 2483 was one of the parentsof top three performing hybrids for all the grain quality traits in majority of the environments. These two parents contributed to top yielding hybrid J 2474 x J 2483 in contest to sca effects. In consideration to early maturity, the genotype J 2290 was poor combiner in all three environments and genotype J 2405 was average combiner in D₁ and D₂; and good general combiner in D₃. However, hybrids combination of these genotypes with other similar genotypes like, J 2503, J 2513, J 2467, J 2474 resulted top performing hybrids for early flowering.