Estimation of character association and path analysis for yield and its sub-characters in Indian Mustard (Brassica juncea L. Czern. and Coss)

Abstract

A field experiment was conducted with twenty-five genotypes/cultivars of Indian mustard were sown in the Rabi season 2021-22. Agronomic yield data were collected and analysed for genetic variability, heritability (broad sense), genetic advance, correlation coefficient and path analysis. All sub-characters of yield and yield per se had shown highly significant variance except the 1000 seed-weight. All characters exhibited high heritability (h2 b.s) except for maturity (low). Number of siliquae per plant, harvest-index, biological-yield, length of main raceme and plant-height had found a positively significant association, while, in contrast, days to maturity showed a negative value with seed yield per plant. A positive direct effect was found in path analysis for biological yield and harvest index, which was coupled with high heritability. Such traits would be treated as good characteristics during the period of selection of parents. The present investigation was carried out to know the genotypic variation on the characters basis as well as their relationship and outstanding genotypes which would be suggested for their attributes exploitation towards enhancing productivity.