Variability and correlation analysis for the nutritional indices in polyvoltine silkworm (Bombyx mar; L.) germplasm

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P. Kumaresan
S. Radhakrishnan
R. K. Sinha

Abstract

Breeds of mulberry silkworm (Bombyx mori L.) differ in their nutritional parameters depending on the silkworm variety, environmental effect upon the physiology of silkworm and quantum of feed given (1). The nutritional requirement and food consumption has a direct impact on larval weight, cocoon weight, amount of silk production and on reproductive traits. The tropical races ingest and digest less amount of food compare to that of temperate ones (2). The studies on nutritional indices may be useful in screening out nutritionally efficient breeds of silkworm. The leaf-cocoon and leaf-shell ratio have a close relationship with the amount of food ingested and digested (3). Hence the present investigation has been under taken to study the variability and relationship among the total ingesta, ingestion to cocoon ratio and shell ratio in fifth age silkworm larvae of fifty-five polyvoltine silkworm germplasm stocks to find out the nutritionally efficient parental lines for further improvement in yield potential and silk productivity.

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How to Cite
Kumaresan, P., Radhakrishnan, S., & Sinha, R. K. (2002). Variability and correlation analysis for the nutritional indices in polyvoltine silkworm (Bombyx mar; L.) germplasm. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 62(04), 377–379. https://doi.org/.
Section
Research Article