Expression of heterosis in silkworm hybrids with popular commercial hybrid CSR2×CSR4as control

Abstract

The study was carried out to evaluate 9 silkworm hybrids along with check hybrid CSR2×CSR4 in order to identify high yielding hybrid. All the observations obtained for various parameters were tabulated and subjected to statistical analysis, following Analysis of Variance techniques. The results were tested for the treatments mean by applying F- test of significance (ANOVA) on the basis of null hypothesis as mentioned by Cochran and Cox (1957).Observation was made on the basis of 13 economically important characters viz; fecundity, hatching, brushing, wt. of 10 mature larvae, ERR by noby weight, pupation, single cocoon weight, single shell weight, shell ratio percentage, filament length, non breakable filament length and filament size. Out of 9 hybrids 2 hybrids U6×ND3 and CSR4×PO1 shows good result when compared with control.