Allelic and Non-Allelic Interaction of some Quantitative Traits in Rice under Water Deficit Conditions | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 15, Issue 12, December 2024, Page 825-834 PDF (1.68 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2024.325597.1392 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
E. M. Daher  ; S. A. Elnaem; Sara A. El-leithy; H. M. Hassan
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| Rice Research Section, Field Crops Research Institute, ARC, Giza, Egypt. | ||||
| Abstract | ||||
| This study was carried out at the Experimental Farm of Sakha Rice Research Station, Kafr El-Sheikh, Egypt, during the 2021, 2022, and 2023 growing seasons. The objective was to evaluate heterosis, inbreeding depression, allelic and non-allelic interactions, and genetic advance for root, physiological, and yield-related traits in rice using a six-population approach: P1, P2, F1, F2, BC1, and BC2. Two rice crosses, Sakha106 × Nerica7 (CI) and Giza177 × GZ 10848-1-2-2-1 (Giza183) (CII), were investigated. Field trials were conducted in a randomized complete block design with three replications. The results revealed highly significant and positive heterosis, as a deviation from both mid-parent and better-parent values, for most traits under both irrigation conditions. Most traits displayed incomplete dominance to over-dominance. Both additive and dominance genetic effects played important roles in trait control, with additive × additive, additive × dominance, and dominance × dominance interactions also contributing to the genetic regulation of most traits, with a few exceptions. High values of Broad-sense heritability and predicted genetic advance were estimated for most traits in the studied crosses. However, narrow-sense heritability was generally moderate to low in most traits of both crosses. Based on these findings, Giza 177 × GZ 10848-1-2-2-1 (Giza183) is recommended for cultivation under water deficit conditions for most of the studied traits. | ||||
| Keywords | ||||
| rice; water deficit; allelic and non-allelic interaction; heterosis and genetic advance | ||||
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