EVALUATION OF INDUCED GENETIC VARIABILITY IN GAMMA RAY IRRADIATED RAPESEED MUTANTS
Bangladesh is suffering from a severe lack of edible oil. As a result, we import oil and oilseeds to overcome the shortage. To select the superior rapeseed mutants an experiment was conducted with thirteen mutants following randomized complete block design. The mutants showed significant genetic variation for most of the characters. Phenotypic variations were higher than genotypic variances for the majority of the traits, the high genotypic coefficient of variation value was also observed for seed yield, number of seeds siliqua-1 and number of siliqua plant-1. Number of seeds siliqua-1 exhibited the highest value of heritability followed by plant height while siliqua length exhibited the lowest value of heritability. Path co-efficient analysis revealed that number of branch plant-1, siliqua length, number of siliqua plant-1, and number of seed siliqua-1 had a direct positive effect on yield. Considering the yield performance genotypes RNM-8, RNM-18, RNM-20 and RNM-33 might be recommended for future varietal improvement program of rapeseeds.
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