Seed Yield Improvement in Mustard [Brassica juncea (L.) Czern & Coss] via Genetic Parameters; Heritability, Genetic Advance, Correlation and Path Coefficient Analysis

Twenty advanced lines along with check varieties of mustard were evaluated under the environmental conditions of Islamabad by utilizing heritability, correlation and path coefficient analysis for seed yield and yield contributing traits. The statistical analysis showed significant differences among all the traits studied. Genotypic and phenotypic variances and coefficients of variation revealed considerable genetic variability in the population. Both genotypic and phenotypic coefficients of variability were high for seed yield. Additive gene effects were evident from high heritability accompanied by high values of genetic advance for seed yield. For further confirmation correlation and path analysis were employed. The genetic correlation of seed yield was positive and significant with days to flower; seeds pod-1, pod length and oil percentage. Path analysis revealed direct positive contribution of seeds pod-1 and oil %age toward seed yield. The indirect effect of pod length on seed yield was positive. So seeds pod-1, pod length and oil percentage would be of great use for indirect selection for improvement in seed yield.