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Heterosis, general combining ability (GCA) and special combining ability (SCA) for resistance traits against disease in some lines of silkworm Bombyx mori L

Published online by Cambridge University Press:  23 November 2017

A R Seidavi ,
A R Bizhannia ,
S Z Mirhosseini ,
M Ghanipoor  and
M Mavvajpour
A R Seidavi*
Affiliation:
Islamic Azad University, Rasht Branch, Rasht, Iran
A R Bizhannia
Affiliation:
Iran Silkworm Research Center, Rasht, Guilan, Iran
S Z Mirhosseini
Affiliation:
Iran Silkworm Research Center, Rasht, Guilan, Iran
M Ghanipoor
Affiliation:
Iran Silkworm Research Center, Rasht, Guilan, Iran
M Mavvajpour
Affiliation:
Iran Silkworm Research Center, Rasht, Guilan, Iran
*
Email: alirezaseidavi@yahoo.com
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Extract

The final goal in the most animal breeding programs is increasing of producing ability of the animals. Measuring the GCA and SCA for selecting the superior parents is important. 3-7 additive genes play more important role in the inheritance of some economical characters. Investigation on GCA and SCA of production and reproduction parameters has been showed that amount of SCA is more than that of GCA. Parents' possessing high GCA are generally considered for population development and for initiation of pedigree breeding as it is heritable and can be fixed. SCA consists of nonadditive, dominant effects and other interactions (Ravindra et al, 2003). Since these value are not constant in different regions, thus must be estimated in different countries.

Type
Poster presentations
Information
Proceedings of the British Society of Animal Science , Volume 2006 , March 2006 , pp. 100
Copyright
Copyright © 2016 The American Society of International Law

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References

Griffing, B. 1950. Concept of general and specific combining ability in relation to diallel crossing systems. Aust. J. Biol. Sci. 9:463-493.Google Scholar
Ravindra, S., Raghavendrarao, D., Kariappa, B. K., Premalatha, V. and Dandin, S. B. 2003. Studies on analysis of combining ability in the mulberry silkworm, Bombyx mori L. Journal of Industrial Entomology 6: 107-113.Google Scholar