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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 12, No. 3, 2008, pp. 45-50
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Bioline Code: ja08048
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Applied Sciences and Environmental Management, Vol. 12, No. 3, 2008, pp. 45-50
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Mutagenic Effect of Diethyl Sulphate (DES) on the Chromosomes of Silkworm Bombyx mori L(Lepidoptera: Bombycidae)
Lokesh, G. & Ananthanarayana, S.R.
Abstract
The silkworms of NB4D2 variety were treated with chemical mutagen Diethyl sulphate (DES). The
larvae were subjected to two methods of treatments i.e., oral administration of the chemical mutagen and by injection
of 8mM and 10mM concentrations of chemical mutagen through body wall. The lethal effect of the mutagen was
studied in the subsequent generation. The effect was drastic on structure & morphology of the meiotic chromosomes.
Many structural, physiological and numerical aberrations were observed and documented. Certain numerical changes
such as induction of polyploids were attributed to the improvements observed in the expression of commercial
characters in the silkworm.
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