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KMID : 1041219720140020061
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Journal of Sericultural and Entomological Science
1972 Volume.14 No. 2 p.61 ~ p.65
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The Selection of combining crosses by heritability
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Kim Won-Kyong
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Abstract
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The main purpose of this experiment is to select the best combining ability among KCN13, and C20N13 in view of the cocoon shell weight in Bombyx mori. In the spring of 1972, the author raised silkworms which were born from the crossing of the Chinese strain KC, C14, C20(female) with japanese strain N13 (male). Among each combining of crosses, the heritability of the cocoon shell weight was estimated by the method of variance analysis. The result of the experiment may he summarized as fellow; 1. For KCN13 The cocoon shell was heavier than other combining crosses, but its heritability was lower than the others. The heritability of male moth was higher than that of female. 3. For C14N13 The cocoon shell and the heritability was in medium value among the combining crosses, and the heritability of female moth was higher than that of male. 3. For C20N13 The cocoon shell weigt was lower than the others, but its heritability was higher than that of others. In these combining crosses, C20N13 is selected as a new race, which is much better than the commercial one, 103104.
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KEYWORD
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