In this study, fifty six bivoltine silkworm breeds was evaluated for its performance based on quantitative and qualitative traits. These breeds were reared in spring, summer and autumn seasons for three years and evaluated for various economically important traits. Suitable genotypes were selected by based on selection index suggested by Smith (1936). The top 10 ranking genotypes are O4, D6(P), D6(M), MC4(E), C122, CSR2, O3, O2, SK3 and BHR2 and the identified breeds will be used in various breeding programmes.
