Gamma radiation is an effective tool for inducing genetic variation in plant characters. In the present experiment, M 5 mulberry variety juvenile twigs were subjected to source Co 60 gamma irradiation (1 kR - 10 kR) and mutants grown in triplicates in randomized block design to raise M 1 and M 2 generation. In M 2 generation plants were subjected to phytochemical and bioassay tests. Silkworm rearing parameters and commercial characters of cocoons were recorded by feeding cross breed silkworms. Results show that M 5 mutant leaves revealed significant variations in phytochemical constituents and moisture content. Bioassay tests recorded significant differences compared to control in M 2 generation. Commercial characters like cocoon weight (1.41 g), shell weight (0.24 g), shell percentage (16.29 %), filament length (821.00 mts), renditta (8.2), denier (2.24) and effective rate of rearing (92.14 %) were increased. It is concluded that, gamma rays treatment enhances the mulberry plants leaf bioactive components, silkworm rearing and cocoon parameters and shows beneficial variants in M 2 generation.
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