RÉSUMÉ
In the present investigation, At RARS, Jagtial, 68 genotypes, including three checks were evaluated for genetic diversity for selection of diverse parents. Divergence studies through D2 statistic indicated the presence of substantial diversity by forming large number of clusters with wide range of inter-cluster distance.The 68 genotypes were distributed into eight clusters based on the D2 values. Among the eight clusters, cluster I was the largest comprising of 30 genotypes followed by cluster II with 22 genotypes and Cluster III and V with six genotypes in each cluster remaining clusters IV, VI, VII, VIII were solitary. The data on character means for eight clusters indicated that, cluster III was having highest mean value for number of capsules per plant, capsule length, capsule width, number of seeds per capsule, seed yield per plant and 1000 seed weight. Cluster VIII for days to 50% flowering, plant height, days to maturity and number of branches per plant. The genotypes JCS 2611, JCS 2454, and JCS 3599 have a high cluster distance and might be employed directly used for adaptation or may be used as parents in future hybridization programme.
RÉSUMÉ
An experiment to know the nature and magnitude of association among 11 characters and their contribution towards seed yield was carried with sixty genotypes of greengram during kharif – 2012. The seed yield per plant showed positive and significant with plant height, numbers of pods per cluster and number of seeds per pod at genotypic and phonotypical level. Path coefficient analysis revealed that maximum direct positive effects exerted by number of pods per cluster, number of seeds per pod, pod length, plant height and 100-seed weight towards seed yield per plant. Based on correlation and path analysis, plant height, numbers of pods per cluster, number of seeds per pod, pod length and 100-seed weight were identified as the most important components of seed yield. It was noticeable from the path analysis that maximum direct positive effects were exerted by number of pods per cluster, number of seeds per pod, pod length, plant height and 100-seed weight towards seed yield per plant. This suggested that prominence should be given to these traits in selection programme for improvement of seed yield in green gram.