Vol. 7, Issue 2, Part A (2025)

The economic traits selected for correlation analysis revealed a significant breed specific variations among selected six bivoltine silkworm pure breeds viz., APS12, J2, CSR53, A3, H281 and RB18 in both males and females. In APS-12, female larval weight correlates significantly with male larval weight (0.758*) and pupation rate (0.696), while males show strong correlations for larval weight (1.000) and pupation rate (0.746*). J2 females correlate with male cocoon weight (0.594*) and pupal weight (0.560*), and males with cocoon weight (0.653*) and pupation rate (0.976*) significantly. CSR53 shows high cocoon and shell weight in both sexes. A3 females show strong shell weight (0.831**) but males have no significant correlations. H281 exhibits strong significance for larval and cocoon trait and RB18 shows positive correlations in both sexes. APS-12, J2, and H281 have stronger variations among males and females while CSR53 shows notable cocoon and shell weight correlation indicating the importance of parental breed’s contribution for crop improvement programme in fulfilling the specific breeding objectives.