An experiment was conducted with 40 genotypes of Brassica species (Brassica juncea-15, Brasica rapa var. yellow sarson-10, Brassica rapa var. toria-5, Brassica tournefortii-5, Brassica nigra-2 and Brassica carinata-3) in Rabi season 2021-22 at College of Agriculture, Jodhpur (Rajasthan). The experiment was put out in randomized block design (RBD) with 3 replications. For all the traits the difference among all the genotypes were significant. The high value of PCV and GCV was recorded for number of siliqua per plant and the low value for days to maturity. High heritability coupled with high genetic advance as per cent of mean were observed for all the characters except days to maturity, which has high heritability coupled with moderate genetic advance as percent of mean. The genetic divergence calculated by Mahalanobis D2 statistics, grouped 40 genotypes into 3 cluster and as per Ward’s D coefficient the 40 genotypes of Brassica were grouped in 6 different clusters.