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Asian Journal of Plant Sciences

Year: 2003  |  Volume: 2  |  Issue: 10  |  Page No.: 790 - 796

Genetic Analysis of Some Economic Traits of Wheat under Drought Condition

Razia Riaz and Muhammad Aslam Chowdhry

Abstract

Six wheat genotypes viz., 90-R-34, 96-R-37, Rawal 87, Rohtas 90, Chakwal 86 and Kohsar 95 were crossed in a 6x6 full diallel fashion during the crop season 1997-98 to determine the genetic architecture of some economic traits of wheat under drought condition. Genotypes differed significantly among each other for all the six traits studied. It was revealed that flag leaf area was conditioned by over-dominance type of gene action. Plant height, tillers per plant, grains per spike, 1000-grain weight and grain yield per plant were under the control of additive gene action. The genotype 90-R-34 was indicated as the best parental genotype. In case of hybrids, all the crosses of 90-R-34 with Rohtas 90 were the best hybrids showing useful characteristics viz., higher grains per spike, 1000-kernel weight and eventually high grain yield per plant. The study on the whole indicated the presence and importance of both additive and -non-additive genetic effects for the inheritance of the studied characters in the six wheat genotypes and their hybrids grown under drought condition. It would be helpful to use recurrent and pedigree selection procedures to select for well adapted drought tolerant genotypes in the subsequent generations of the crosses involving 90-R-34, 96-R-37 and Rawal 87.

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