Character Association and Path Analysis in Recombinant Inbred Line Population of the Cross JL 24 X ICG 13919 in Groundnut (Arachis Hypogaea L.)

The present study was undertaken to study the correlation coefficients among yield contributing traits and late leaf spot score at 75, 90 and 102 DAS with their path effects towards pod yield were investigated in RIL population of groundnut cross JL 24 X ICG 13919 during Kharif 2010. The studies on phenotypic and genotypic correlation coefficients revealed that pod yield per plant had strong positive correlation with number of mature pods per plant, immature pods per plant, total pods per plant, mature seed per plant, immature seeds per plant, hundred seed weight, shelling per cent and haulm weight per plant indicating that improvement of these characters will lead to improvement in yield. Whereas significant negative correlation with LLS disease score at 75 and 90 DAS. Among these characters, number of mature seeds per plant manifested maximum positive direct effect towards the pod yield per plant followed by total pods per plant and haulm weight per plant and other characters had high indirect effects through number mature pods per plant and mature seeds per plant. This suggested that emphasis should be given to number of mature pods per plant, total number of pods per plant, mature seeds per plant and haulm weight per plant in selection for high yielding lines in groundnut. It was observed that selection for these traits would be useful in the genetic improvement of these traits.