Vol. 9, Issue 8, Part K (2025)

The inheritance of egg color in the silkworm (Bombyx mori L.) is an important characteristic in breeding programs. It offers insights into Mendelian segregation patterns and hybrid performance. This study examined the monohybrid inheritance of egg color through a cross between multivoltine females (Pure Mysore) and bivoltine males (CSR2). F1 progenies were raised in controlled conditions. Economic factors such as fecundity, hatching percentage, larval duration, cocoon weight, shell weight, and filament length, etc were measured. F2 offspring displayed clear segregation of egg color, showing a 3.3:1 ratio of bivoltine-like (brown/violet) to multivoltine-like (yellow/light yellow) egg colors. This illustrates Mendelian inheritance of the trait. Fecundity and larval longevity were higher in F2. However, statistical analysis showed that F1 progeny performed better than F2 progeny regarding cocoon and post-cocoon parameters. These results affect egg quality in sericulture and how we approach hybridization strategies.