The current study including twenty- seven genotypes was undertaken to assess the genetic parameters, correlation coefficient, path coefficient analysis and genetic divergence. Moderate heritability combined with high genetic advance was noticed for total aphid proliferation compared to initial, demonstrating the prevalence of additive gene effect. Analysis of variance revealed substantial amount of variability among the genotypes for all the traits, showed varied spectrum of variability between the genotypes. The 27 mustard genotypes were assembled into five clusters. Cluster II had the maximum number of genotypes. This predicted that the genotypes grouped within a particular cluster are more or less genetically similar to each other. Maximum inter-cluster divergence was amongthe cluster I and cluster IV. Genotypes belonging to these clusters wereconsidered as more divergent. Trait like primary branches per plant, seeds per siliqua and 1000 seed weight showed significant positive as

Brassica juncea, heritability, genetic advance, genetic diversity, correlation and path analysis

Consequently, it may be concluded that there is adequate genetic variability for most of the traits studied in the above genetic material and total aphid proliferation compared to initial aphid count showed maximum potential for effectiveness of selection. Because these traits showed high GCV as well as PCV, heritability and genetic advance as percentage of mean. This would help us design the selection methodology that can further be employedin the breeding programme to recoverseed yield in Indian mustard. The traits showing a significant positive correlation with the seed yield are primary branches per plant, seeds per siliqua and 1000 seed weight. These above said attributes could serve as marker traits for seed yield improvement in mustard. The high positive direct effect was showed by primary branches per plant indicating the proper relationship between trait and seed yield. Maximum inter-cluster D2 value was noted among the clusters V and III which signifies that crossing would be

Nandi, S. , Rout, S., Sur, B., Chakraborty, M., Hijam, L., Roy, S.K. and Gupta, A. (2021). Assessment of Genetic Parameters, Trait Association and Diversity Analysis in Indian Mustard [Brassica juncea (L.) Czern and Coss]. Biological Forum – An Inter