Author(s):

Sipra Pal, Nidhi Dubey, Harshal Avinashe, Sudip Khan and J Pranay Reddy

Abstract: Phenotypic and genotypic coefficient of variation (PCV &amp; GCV), heritability, genetic advance (GA), correlation and path analysis for thirteen characters in seven genotypes of Indian mustard (<em>Brassica juncea</em> L.) were evaluated for seed yield and its yield contributing traits. Genetic variability indicated that, the PCV was greater than GCV for all the traits studied was majorly due to the influence of environment. High heritability along with high genetic advance as per cent of mean were recorded for seed yield per plant, seeds per siliqua, siliqua length and secondary branches per plant indicating the breeding improvement through direct selection. In correlation analysis, seed yield per plant had significant and positive correlation with secondary branches per plant, siliqua per plant, biological yield per plant, harvest index, days to maturity, 1000 seed weight and oil content at both genotypic and phenotypic levels. Path coefficient analysis indicated that, among twelve yield contributing characters highest positive direct effects was noted for biological yield per plant followed by siliqua length, harvest index, 1000 seed weight, Siliqua per plant and primary branches per plant on the seed yield per plant. Other characters like seeds per siliqua, plant height, days to 50% flowering, days to maturity, secondary branches per plant and oil content had negative direct effect on seed yield. Therefore these traits should be given more priority for selection in breeding programme.

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