The Indian Journal of Genetics and Plant Breeding

Combining ability analysis for yield and yield components of mungbean (Vigna radiata (L.) Wilczek) was attempted using a 7x7 diallel mating system both in F₁ and F₂ generations at three locations. Both gca and sca mean squares were significant for all the six characters in F₁ and F₂ generations, the former being more pronounced, except that nonadditive gene effect was predominant for cluster, pods and grain yield/plant in F₁. The estimates of interaction of gca and sca with environments were significant in all cases except both the interaction for 100-seed weight in F₁ and sca X environment for clusters/plant in F₂. The parent ML 5 was a good general combiner for seed yield, podslplant, clusters/plant and tallness. While cv. Sabarmati was good general combiner for seed yield, pods/plant, and short stature. K 851 and Gujarat 2 were the best combiners for podlength and seed size in both generations. For inducing dwarfness, 12/333 was found out to be the best parent. The crosses showing high sca effects for yield also had significant and positive effects for at least two important yield components.