author(s)
Rubia Bukhari, RK Bali and Kamlesh Bali

abstract
The quantitative characters of silkworm, Bombyx mori L. Such as larval duration, cocoon weight, cocoon shell weight, survival rate etc., are of utmost importance in sericulture. Mulberry silkworm, Bombyx mori L. is the most important insect being used for commercial production of silk in sericulture industry. The study was undertaken to analyze correlation between the yield and some yield contributing characters of twenty breeds of silkworm on the basis of single season rearing performance to study the relationship between yield and different yield contributing characters of silkworm for silk production. Correlation analysis of 10 phenotypic parameters revealed that highly significant and positive correlations were observed among quantitative characters of silkworm. The maximum value of correlation was observed between single cocoon weight with 5th day larva weight (0.864) and minimum value was observed between the silk percentages with single shell weight (0.470).