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KMID : 1041219860280010024
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Journal of Sericultural and Entomological Science
1986 Volume.28 No. 1 p.24 ~ p.29
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Genetic Analysis by Diallel Crosses in F1 Generation of Silkworm, Bombyx mori
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ï÷êªÜØ/Jeong, Won Bog
íåÏíæï/ùÛÌðâ³/ÑÑòåû°/׳ˣԳ/ï÷ûàçµ/׳â³ôË/Chang, Kwon Yawl/Han, Kyung Soo/Kim, Jin Hyeong/Ryu, Kab Do/Chung, Ho Young/Ryu, Soo Cheol
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Abstract
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A set of 21 crosses of Fl generation by diallel crosses from seven parent silkworm, Bombyx mori L. were used as materials to estimate genetic parameters such as gene action and combining ability.
Experiments were conducted in 1985, and three characters, which are weight of cocoon, weight of cocoon layer and ratio of cocoon layer, were observed.
The data were analyzed for each character by Jinks¢¥, Hayman¢¥s and Griffing¢¥s methods.
The result obtained are summarized as folllows:
1. In Vr-Wr graphical analyses, weight of cocoon was found to be inherited in over dominance, and weight of cocoon layer and ratio of cocoon layer were observed as partial dominance.
2. Estimate of additive component of variance(D) was greater than those of dominance component of variance(H) for weight of cocoon layer and ratio of cocoon layer, and positive values of F were observed for all characters.
3. Mean squares of general combining ability were higher than those of specific combining ability.
4. Variety Jam 107 was expressed as the highest GCA effects for three characters, and high SCA effects for all characters were observed in combinations of Jam 113 X Jung 14 and Jam 107 X jung 14.
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