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Publication
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| Research Title |
Physiological traits, photosynthesis nitrogen use efficiency during drought stress and recovery period and its contribution to yields of diverse set sugarcane genotypes grown under early drought condition |
| Date of Distribution |
19 August 2024 |
| Conference |
| Title of the Conference |
Proceedings of ISSCT Agriculture Commission Workshop Agricultural Engineering and Agronomy Sections |
| Organiser |
International Society of Sugar Cane Technologists |
| Conference Place |
The Zign Hotel Pattaya, Chonburi |
| Province/State |
Pattaya, Chonburi |
| Conference Date |
19 August 2024 |
| To |
22 August 2024 |
| Proceeding Paper |
| Volume |
2567 |
| Issue |
1 |
| Page |
32 |
| Editors/edition/publisher |
- |
| Abstract |
Early drought diminished plant physiology activities and nitrogen use efficiency in photosynthesis, resulting in reduced cane yield. Interspecific hybridization between S. officinarum and S. spontaneum can improve drought resistance and possibly enhance photosynthesis and nitrogen use efficiency. The aim of this study was to determine the physiological traits, photosynthesis, nitrogen use efficiency, and their contribution to yields of divers set sugarcane genotypes grown under early drought conditions. The experiment was arranged in a split plot in a randomized complete block design with three replications. The main plot consisted of two water regimes (well-watered (WW) and early drought stress (DS)), whereas the subplot consisted of six sugarcane genotypes. Relative water content (RWC), SPAD chlorophyll matter reading (SCMR), stomatal conductance (Gs) and photosynthetic rate (Pn) were measured at 6, 8, and 10 months after transplanting (MAT). Photosynthesis nitrogen use efficiency (PNUE) was measured at 6 and 8 MAT, while biomass was measured at 3, 6, 8, 10, and 12 MAT, and cane, sugar, and fiber yield were measured at 12 MAT. The results indicated that drought reduced RWC, Gs, Pn, and PNUE in all sugarcane genotypes throughout the drought period at 6 MAP. Maintaining Pn when sugarcane is experiencing drought stress can promote cane yield production. In addition, Pn and PNUE were completely recovered at 8 MAT. However, at 8 MAT, PNUE was positively associated with CGR in these sugarcane genotypes. F03-362, KK09-0358, and KK3 exhibited high cane yields under drought stress; in addition, these genotypes showed high potential with a low reduction in cane yield. Understanding the water stress-response mechanisms of sugarcane divers set is important for drought-tolerant sugarcane breeding success. |
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| Peer Review Status |
มีผู้ประเมินอิสระ |
| Level of Conference |
นานาชาติ |
| Type of Proceeding |
Abstract |
| Type of Presentation |
Poster |
| Part of thesis |
true |
| Presentation awarding |
false |
| Attach file |
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| Citation |
0
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Journal Publication
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