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Genetic Composition of Heterosis in F1 Rice Hybrid |
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| รหัสดีโอไอ | |
| Creator | 1. Dumnern Kariadee 2. jirapan Pulpipat 3. Sansanee Jamjod |
| Title | Genetic Composition of Heterosis in F1 Rice Hybrid |
| Publisher | Department of Agriculture |
| Publication Year | 2556 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 31 |
| Journal No. | 3 |
| Page no. | 257-269 |
| Keyword | ยีนแบบบวกสะสม, ยีนแบบข่มทางบวกหรือทางลบ, ยีนแบบข่มเกินกว่าพ่อแม่ค่าต่ำหรือพ่อแม่ค่าสูง, ค่ากึ่งกลางระหว่างพ่อและแม่, additive effect, positive or negative dominance, overdominance for lower parent, overdominance for higher parent, mid-parent value |
| URL Website | http://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | Utilization of heterosis in rice has contributed tremendously to the increase in rice productivity. There have been ranges of studies in many aspects of heterosis. But the key of genetic component of heterotic performance in crop hybrid is still uncharacterized. In this study, dissection of genetic composition of F, rice hybrid in traits in traits has been made : for culm length, yield components, grain amylose and grain anthocyanin. CRD comparative data was used between F1 populations derived from 2 combinations: (elite F8 non-glutinous purple lines combined x PPT1) and elite F8 non-glutinous purple rice lines x KDML 105 with their 2 male-parents. The experiment was conducted with replicated pot yield trial at the Faculty of Agriculture, Chiang Mai University during 2010. Heterotic percentage was calculated as the relative of F1 mean to the mid-parent value. The results showed that the genetic component varied among traits. Additive gene effect was achieved for culm length and 1,000 grain weight. Number of tiller and panicle per hill were negative dominance. Percent of filled grain was overdominace for lower parent. While both additive and positive dominant effects were the genetic component of grain amylose and anthocyanin contents. This results provided adequate genetic basis of hybrid heterosis in rice regarding selection for improving the traits. |
