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Study on genetic parameters of some economic traits in Iranian indigenous silkworm races

Published online by Cambridge University Press:  23 November 2017

S. Z. Mirhosseini*
Affiliation:
Department of Animal Sciences, Faculty of Agriculture, Guilan University, P. O. Box 3179, Rasht, Iran Guilan Research Center of Agriculture and Natural Resources, P. O. Box 41635-3394, Rasht, Iran National Research Center of Sericulture, Rasht, Iran
M. Mavajpoor
Affiliation:
National Research Center of Sericulture, Rasht, Iran
M. Ghanipoor
Affiliation:
Guilan Research Center of Agriculture and Natural Resources, P. O. Box 41635-3394, Rasht, Iran
A. Seidavi
Affiliation:
National Research Center of Sericulture, Rasht, Iran
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Extract

Silkworms are well-known industrial insects, which produce natural fiber silk. Because of economic importance for silk yarn, an effort to breed new silkworm variety has been made for thousand years. High cocoon yielding due to high resistance, high silk reeling ability and productivity, better silk quality in neatness and lousiness is essential for new silkworm variety to increase silk productivity. Today, several hundred varieties have been bred accordingly various interests and purposes (Kang et al., 2001, 2002). Pupation rate, single cocoon weight, cocoon shell weight and cocoon shell percentage are the main factors affecting the high yielding of cocoon (Kang et al., 2001, 2002). Native silkworm varieties have the low performance and could not be commercially employed. Indigenous strains are valuable genetic resources. They have been affected by natural selection in the successive generations and adapted to indigenous diseases and environmental conditions. Genetic and phenotypic characterization of locally available native silkworm populations provides essential information to make rational decisions for the improvement and development of effective breeding programmes. Hence, the present study was undertaken to identify genetic potential of indigenous silkworm for designing suitable breeding programmes.

Type
Poster Presentations
Copyright
Copyright © The British Society of Animal Science 2005

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References

Kang, P. D., Kim, K. M., Sohn, B. H., Lee, S. U., Woo, S. O. and Hong, S. J. 2001. Breeding of a new silkworm variety, Chunsujam, with a high yielding for spring rearing season. International Journal of Industrial Entomology 2: 6568.Google Scholar
Kang, P. D., Sohn, B. H., Lee, S. U. and Hong, S. J. 2002. Breeding of a new non-cocooning silkworm variety, Hachojam, suitable for autumn rearing season. International Journal of Industrial Entomology 4: 7781.Google Scholar