Combining Ability of Diallel Crosses of Bivoltine Silkworm, Bombyx mori L.
1
조회
0
다운로드
1
인용
0
참고문헌
초록
Abstract
General and specific combining ability effects of six bivoltine breeds of silkworm (Bombyx mori L.) were evaluated for six quantitative characters through diallel method wherein parents, F1s and reciprocals are involved. The breeds APS11 and APS2 were found to be the best general combiners for most of the traits studied. The high estimates of specific combining ability (sca) variance (σ2s) compared to general combining ability (gca) variance (σ2g) indicated the predominant role of non-additive gene action in the control of all the characters. Positive sca effects for majority of the traits were expressed by the combinations APS13 ×APS6, APS13 × APS2, APS11 × APS6 and APS5 × APS2 out of 15 crosses. Among the 15 reciprocal crosses studied, the combination APS8 × APS13 showed positive reciprocal effects for all the six traits. With both the parents APS5 and APS2 being good general combiners the hybrid APS5 × APS2 showing high sca effects is recommended for commercial use.
참고문헌 (15)
- Baker, "Issues in diallel analysis. Crop Sci. 18", pp.533~536 (1978)
- M. K. Majumdar, "Combining ability of seven silk technological characters inthe mulberry silkworm", pp.359~362 (1995)
- V. Thiagarajan, "Combining ability and genetic analysis ofquantitative traits in silkworm", pp.327~330 (1992)
- Chauhan, "Combining ability studies in bivoltine silkworm", pp.127~130 (2000)
- Griffing, "Concept of general and specific combiningability in relation to diallel crossing systems. Aust. J. Biol.Sci. 9", pp.463~493 (1956)
- He, "Genetic analysisof the inheritance of pupation rate and some traits ofcocoon from diallel crosses of the silkworm" (1989)
- L. lines. Acta. Agric. Zhejiang. 1, "An Introduction to Genetic Statistics.John Wiley and Sons Inc.", pp.32~ (1957)
- "New technology of silkworm rearing.Central Sericultural Research and Training Institute", bull.(2), pp.1~10 (1978)
- Malik, "Combining ability analysis over environments indiallel crosses of bivoltine silkworm", pp.22~25 (1999)
- Moon, "The test of combining abilityand heterosis on the silkworm", pp.8~25 (1994)
- E, "Line × Tester analysis ofcombining ability in new genotypes of bivoltine silkworm", pp.287~290 (1997)
- Ravindra Singh, "Studies on Analysis ofCombing ability in the Mulberry Silkworm", pp.107~113 (2003)
- Simmonds, "Principles of crop improvement.Longman Inc." (1979)
- Sudhakar Rao, "Evaluation ofcombining ability in hybrids between polyvoltine and bivoltinesex-limited cocoon colour breeds of silkworm", pp.163~167 (2001)
- Yokoyama, "On the application of heterosis in JapaneseSericulture. Proc. Internat. Genet. Symp. 527-531." (1957)