Gene Action for Yield and Yield Component Traits in Bread Wheat (Triticum aestivum l.) Under late Sown Conditions | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 4, Volume 7, Issue 7, July 2016, Page 219-225 PDF (578.95 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2016.40890 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| E. Ibrahim | ||||
| Department of Genetic, Faculty of Agriculture, South Valley University, Quna, Egypt. | ||||
| Abstract | ||||
| The present work was conducted during the two wheat growing seasons of 2013/2014 and 2014/2015 respectively, at the Experimental Farm of South Valley University to study the gene action under normal sowing date (30th November) and late sowing dates (10th January). Five parents were crossed in ahalf diallel cross mating design. The F1´s hybrids and their parents were raised under normal and late sowing dates. The analysis of the F1 generations and their parents revealed that additive gene effects was manifested for all traits studies in the first sowing date, but the reverse was true in the second sowing date. However, over-dominance type of gene action was recorded for grain yield in the first sowing date and partial dominance in the second sowing date. As to the number of kernels/spike partial dominance was displayed in the first sowing date and over dominance in the second sowing date. Narrow sense heritability estimates ranged from 0.49 in the first sowing date to 0.69 in the second sowing date for grain yield. Meanwhile, narrow sense heritability was 0.58 for 1000-grain weight and 0.69 for grain yield in the second sowing date. | ||||
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