The study was taken up to estimate genotypic and phenotypic variability, heritability with genetic advance, correlation and cluster analysis on growth and yield parameters in 10 variants of variety T-9 of Brassica Campestris (toria). These variants were obtained through mutagenesis. Analysis of variance reveals that there are highly significant differences among all the traits studied. Comprehensively, phenotypic coefficients of variance were higher than their respective genotypic coefficients of variance for all the traits. High GCV was observed for pods plant^-1, beak length and seed yield plant^-1 while highest PCV was exhibited for secondary branches plant^-1. Broad sense heritability ranged from lowest 16.41 for secondary branches per plant to highest 72.35 for plant height. Pods plant^-1, plant height, beak length, pod length and seed yield plant^-1 showed high genetic advance over mean percent. The results of correlation revealed that seed yield plant^-1 exhibited highly significant positive association with stem perimeter, secondary branches, pods on main raceme, pod plant^-1 and 100 seed weight, although significant negative correlation with beak length. The traits which showed positive correlation with seed yield were the main contributor towards high seed yield plant^-1. All genotypes were grouped into two clusters at 3% linkage. The cluster I comprising variants with maximum mean value for plant height, raceme length, pod length whereas cluster II genotypes showed high mean value for pod plant^-1, 100 seed weight and seed yield plant^-1.The result of genetic divergence in variants shows that it is helpful in the selection of superior yield attributes in breeding program of oilseed Brassicas.