摘要
Gamma radiation is an effective tool for inducing genetic variation in plant characters. In the present experiment, M<sub>5</sub> mulberry variety juvenile twigs were subjected to source Co<sup>60</sup> gamma irradiation (1 kR - 10 kR)</span><span> </span><span style="font-family:"">and mutants grown in triplicates in randomized block design to raise M<sub>1</sub> and M<sub>2</sub><sup> </sup>generation. In M<sub>2</sub> 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<sub>5</sub> mutant leaves revealed significant variations in phytochemical constituents and moisture content. Bioassay tests recorded significant differences compared to control in M<sub>2</sub> 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 </span><span style="font-family:"">that, gamma rays treatment enhances the mulberry plants leaf </span><span style="font-family:"">bioactive components, silkworm rearing and cocoon parameters<b> </b>and shows beneficial variants in M<sub>2</sub> generation.
Gamma radiation is an effective tool for inducing genetic variation in plant characters. In the present experiment, M<sub>5</sub> mulberry variety juvenile twigs were subjected to source Co<sup>60</sup> gamma irradiation (1 kR - 10 kR)</span><span> </span><span style="font-family:"">and mutants grown in triplicates in randomized block design to raise M<sub>1</sub> and M<sub>2</sub><sup> </sup>generation. In M<sub>2</sub> 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<sub>5</sub> mutant leaves revealed significant variations in phytochemical constituents and moisture content. Bioassay tests recorded significant differences compared to control in M<sub>2</sub> 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 </span><span style="font-family:"">that, gamma rays treatment enhances the mulberry plants leaf </span><span style="font-family:"">bioactive components, silkworm rearing and cocoon parameters<b> </b>and shows beneficial variants in M<sub>2</sub> generation.
