Indian Journal of Agricultural Research

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Indian Journal of Agricultural Research, volume 37 issue 3 (september 2003) : 175 - 180

EFFECT OF SOME BIOLOGICALLY ACTIVE SUBSTANCES ON SOME ECONOMIC CHARACTERS OF SILKWORM, BOft1BYXMORI L.

Tapan Kumar Hath·, S. Datta·
1Department of Agricultural Entomology, North Bengal Campus, Bidhan Chandra Krishi Viswavidyalaya,Cooch Behar - 736165, India

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Cite article:- Hath· Kumar Tapan, Datta· S. (2024). EFFECT OF SOME BIOLOGICALLY ACTIVE SUBSTANCES ON SOME ECONOMIC CHARACTERS OF SILKWORM, BOft1BYXMORI L.. Indian Journal of Agricultural Research. 37(3): 175 - 180. doi: .

ABSTRACT

One-day, 4-day and 7-day old eggs of bivoltine silkworm, Bombyx mori L. (P 5 race) were treated by aqueous solutions of ascorbic acid, biotin, bovine serum albumin, theophylline, 5-HT and c-AMP at the concentrations of 2 mg/ml, 1.5mg/ml, 2 mg/ml, 1.5 mg/ml, 2 mg/ml and 1.5 mg/ml, respectively and subsequent to treatments different economic parameters of the silkworms were studied. Except ascorbic acid all chemicals improved larval and cocoon weight and effect of 5-HT was pronounced (41.46g/10 larvae; 2.026g/cocoon). However, improvement in pupal weight was effected except ascorbic acid and c-AMP. None of the biologically active chemicals exhibited any major effect on shell weight and SR% while all improved ERR%. Noticeable effect of 7-days old egg treatment was obtained in all characters except ERR% where treatment at 4-day egg revealed significant improvement.

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