Department of Plant Breeding, Punjab Agricultural University, Ludhiana
The present study was made on 75 strains of mungbean to determine the interrelationships and selection indices. This study revealed that genotypic correlation coefficients were higher than phenotypic and environmental correlation coefficients. Seed yield was found to be significantly associated with bunches per plant, pods per plant, pod length, seeds per pod and seed size. Multiple regression analysis showed that seed size, seeds per pod and pods per plant are the most important characters in determining the yield in mungbean.
Path coefficient analysis indicated that pods per plant, seeds per pod and seed size influenced the seed yield if other components were kept constant.
However, the seed size had negative indirect effect on yield through seeds per pod and pods per plant and vice versa. Thus, if an increase in seed yield is to be obtained a compromise must reach in selection programme so that advance in one yield component may not be nullified by deterioration in other. In general, the character pairs which had high correlation values also gave high coheritability values.
