ANALYSIS OF GENE EFFECTS FOR GRAIN YIELD IN BARLEY
Citation :- ANALYSIS OF GENE EFFECTS FOR GRAIN YIELD IN BARLEY.Agricultural Science Digest.2003.(23):243 - 246
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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