BIOLOGY OF BIVOLTINE SILKWORM HYBRIDS ON G2 MULBERRY VARIETY

The experiment was conducted at Sericulture Research Unit, VNMKV, Parbhani, during 2021, in randomized block design with eight treatments and three replications. The bivoltine silkworm hybrids viz., (CSR2 x CSR4) x (G3 x G2), (SHP5) x (CSR46 x CSR47), (G3 x G2) x (SHP5), (G3 X G2) x (SHR1), (CSR16 x CSR17) x (DHP5), (S8 x CSR16) x (CSR2x CSR4), (CSR46 x CSR47) x (S8 x CSR16) and (S8 x CSR16) x (CSR50 x CSR51) were utilized as treatments and the mulberry variety G-2 was used for feeding the different hybrids as above. Among the different hybrids reared, the bivoltine hybrid (CSR16 x CSR17) x DHP5 performed better for economic characters viz., weight of larvae (41.43g), larval duration (24.25 days), cocoon weight (1.92g), shell weight (0.403g), shell ratio (21.09%), filament length (1140m), filament weight (0.322g), cocoon yield (18.18kg) and effective rate of rearing (93.70%) and the moth emergence over rest of treatments.