Venkataravana, P.UMA, R. BYADAGI.2021-09-302021-09-302018-08-01Th-12084https://krishikosh.egranth.ac.in/handle/1/5810176437F2 and F3 populations of three connected crosses of groundnut viz., TMV-2×ICGV-91114, TMV-2×TG-69 and TMV-2×ICGV-00350 were assessed to estimate the nature and magnitude of genetic variability, pattern of character association and direct effect of component traits on pod yield plant-1 during kharif and summer-2017 at ARS, Chintamani and NSP, GKVK, Bengaluru, respectively. Higher magnitudes of range and standardized range were observed for all traits in all three crosses. Higher estimates of GCV and PCV noticed for pods plant-1, branches plant-1, SMK%, pod yield and kernel yield plant-1 in three crosses indicated the presence of adequate variability. Close correspondence between estimates of GCV and PCV indicated lesser influence of environment on traits like plant height, branches plant-1 and days to first flowering in all three crosses which was amply reflected by high broad sense heritability along with high expected GAM, suggesting the involvement of additive gene action in controlling these traits. The characters like branches plant-1, pods plant-1, shelling% and SMK% had significant positive while, plant height showed significant negative correlation with pod yield plant-1 in three crosses. Pods plant-1, branches plant-1 and plant height exerted higher direct effect on pod yield plant-1. High and positive estimates of selection differential and selection response were recorded for all the traits in three crosses. Performance of cross TMV-2×ICGV-00350 was superior over other crosses in both generations. 28 superior TMV-2 pod type bearing F3 plants which surpassed the performance of parents and checks were identified from all three crosses and suggested to evaluate further.EnglishThesis