Utilization of gamma irradiation for the genetic improvement of Oriental mustard (Brassica juncea Coss.)

Homogeneous seeds of Oriental mustard cv. Agati Sarhein (Brassica juncea Co ss.) were treated with different doses of gamma rays (750 to 1250 Gy) to in duced genetic variability for the selection of genotypes with improved agro nomic traits. Seventy-five useful mutants selected from M-2 generation were tested in progeny rows to confirm the stability of genetically altered eco nomic traits in M-3 generation. Thirteen mutants with promising performance for yield and yield components were evaluated in preliminary yield trial. File mutants produced significantly (P less than or equal to 0.05) higher y ield than parent.