Character association and path analysis studies in groundnut (Arachis hypogaea L.)

Data was collected on Twelve characters measured on 27 progenies of three crosses and four checks (Cross 1- Phule Unnati x ICGV 15311, cross 2-Phule Unnati x ICGV 15308, cross 3-Phule Unnati x Girnar 4, checks - Phule Unnati, Girnar 4, ICGV 15311, ICGV 15308) examined the extent, character relationships and direct and indirect contributions of different components on dry pod yield and oleic acid using a randomized block design with three replications. The following metrics were noted: harvest index (dry weight basis) (%), sound mature kernel (%), oil content (%), oleic acid (%), protein content (%), number of mature pods plant-1, dry haulm yield plant-1, dry pod yield plant-1, and hundred kernel weight. Compared to their comparable estimates of phenotypic correlation coefficients, the estimates of genotypic correlation coefficients were found to be greater. Dry haulm yield per plant, sound mature kernel, number of mature pods per plant, oil content, shelling percentage, harvest index, days to 50% flowering, days to maturity, hundred kernel weight, and oleic acid (%) all significantly increased the dry pod yield per plant. Dry pod yield per plant showed significant negative correlation with protein content (%). Path coefficient analysis revealed that the number of mature pods per plant showed higher direct effect on dry pod yield per plant followed by days to maturity, oil content, sound mature kernel. Dry pod yield was negatively impacted by protein content, dry haulm yield per plant, days to 50% flowering, shelling percentage, oleic acid percentage, harvest index (dry weight basis), and 100 kernel weight.