volume 23 issue 4 (december 2003) : 243 - 246
ANALYSIS OF GENE EFFECTS FOR GRAIN YIELD IN BARLEY
1Department of Plant Breeding and Genetics,
S.K.N. College of Agriculture, Jobner - 303329, India
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Agricultural Science Digest
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volume 23 issue 4 (december 2003) : 243 - 246
ANALYSIS OF GENE EFFECTS FOR GRAIN YIELD IN BARLEY
1Department of Plant Breeding and Genetics,
S.K.N. College of Agriculture, Jobner - 303329, India
ABSTRACT
To study the nature and magnitude of gene effects in three barley crosses involving four diverse parents under three fertility environments, generation mean analysis was used for effective tillers per plant, 100-grain weight and grain yield. Dominance main effect and additive x additive type of epistatic gene action were found important in controlling inheritance of all these traits. Despite high magnitude of dominance gene effect, the dominance property would not be exploitable because of duplicate type of gene action found for these traits. However, additive x additive gene effect can offer only limited possibility of genetic improvement through simple selection procedures. The direction of both fixable and non-fixable gene action and of duplicate epistasis implies the use of biparental approach/intermating in early segregating generations.
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REFERENCES
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- Mather, K. (1949). Biometrical Genetics, Methuan and Co. Ltd., London.
- Morsi, L.R. et al (1975). Genetica Agraria, 29: 379-390.
- Nigmatullin, EG. and Abdulamonov, K. (1986). Genetika, USSR, 22: 1143-1146.
- Riggs, T.J. and Heyter, A.M. (1975). Theor. Appl. Genet., 46: 257-264.
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In this Article
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Published In
Agricultural Science Digest