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Study of resistance and vitality responses in six silkworm (Bombyx mori L.) hybrids under individual selection for parental lines

Published online by Cambridge University Press:  22 November 2017

A Seidavi ,
S Z Mirhosseini ,
M Mavvajpour ,
A Bizhannia  and
M Ghanipoor
A Seidavi*
Affiliation:
Animal Science Department, Islamic Azad University, Rasht Branch, Rasht, Islamic Republic of Iran
S Z Mirhosseini
Affiliation:
Animal Science Department, Guilan University, Rasht, Islamic Republic of Iran
M Mavvajpour
Affiliation:
Iran Silkworm Research Center, Rasht, Islamic Republic of Iran
A Bizhannia
Affiliation:
Iran Silkworm Research Center, Rasht, Islamic Republic of Iran
M Ghanipoor
Affiliation:
Iran Silkworm Research Center, Rasht, Islamic Republic of Iran
*
Email: [email protected]
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Extract

Sericulture has been an important agricultural industry since 2650 BC (Seidavi et al. 2006). There are about 10 million farmers and 0.5 million related industrial workers in the world. The present capacity of silkworm eggs production in Iran is about 70000 boxes per year which are distributed among 40000 silkworm house holders. Annual cocoon production in Iran is about 6000 metric tons which is small in comparison with production in previous centuries. Silkworm breeding using selection systems can improve line and hybrid performance. Individual selection based on cocoon weight in GGP generation (great grandparent) improved GP (grandparent) and P (parent) parental line generation (Seidavi et al. 2007), but it did not consider the effects on resistance performance of hybrid generation. In this experiment, the effects of two phenotypic selections of GGP parents on vitality (percentage of survival pupae) and resistance properties in six of their hybrids (including 31×32, 32×31, 103×104, 104×103, 107×110 and 110×107) were studied.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2009 , April 2009 , pp. 130
Copyright
Copyright © The British Society of Animal Science 2009

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References

ESCAP. 1993. Principle and Techniques of Silkworm Breeding. United Nations, New York.Google Scholar
Seidavi, A.R., Bizhannia, A.R, Mavvajpour, M., Mirhosseini, S.Z. and Ghanipoor, M. 2006. Sericologia. 46, 169–175.Google Scholar
Seidavi, A.R., Mirhosseini, S.Z., Bizhannia, A.R., and Ghanipoor, M. 2007. Iranian Journal of Biology. 20, 262–268.Google Scholar