Genetic analysis on the extent of variability among the greengram (Vigna radiata (L.) Wilczek) genotypes

The present investigation was carried out at National Pulses Research Centre, Vamban during Rabi 2017-18 season to assess the extent of genetic variability among the newly developed 49 greengram genotypes based on the yield and yield contributing traits. Observations were recorded on days to 50% flowering, days to maturity, plant height (cm), the number of branches per plant, the number of clusters per plant, the number of pods per cluster, the number of pods per plant, pod length (cm), the number of seeds per pod, 100 seed weight (g) and seed yield (kg/ha). The analysis of variance revealed the presence of significant variation for all the characters studied except for the number of seeds per pod. In general, the PCV values were higher than the GCV values indicating the influence of environment in controlling these traits. Among the estimates of genetic parameters, heritability along with genetic advance are normally more helpful in predicting the gain under selection. In the present investigation, plant height, the number of branches per plant, the number of clusters per plant, the number of pods per plant, hundred seed weight and seed yield have recorded a high heritability coupled with high genetic advance. High heritability coupled with high genetic advance indicated that the selection may be effective for these traits.