GENETIC ANALYSIS OF HOMOGENEOUS AND HETEROGENEOUS POPULATIONS GROWN OVER ENVIRONMENTS IN MUNGBEAN

Abstract

Combining ability analysis for yield and yield components of mungbean (Vigna radiata (L.)Wilczek) was attempted usinga 7x 7diallelmating system both in Fl and F2generations at three locations. Both gca and sca mean squares were significant for all the six characters in Fl and F2 generations, the former being more pronounced, except that nonadditive gene effect was predominant for cluster, pods and grain yield/plant in Fl. The estimates of interaction of gca and sca with environments were significant in all cases except both the interaction for 100-seed weight in Fl 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 ev. Sabarmati was good general combiner for seed yield, pods/plant, and short stature. K 851 and Gujarat 2 were the best combiners for pod length 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.