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Publication
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| Research Title |
Nitrogen use Efficiency and Cane Yield of Interspecific Hybrids and Commercial Sugarcane Genotypes Grown under Early Drought Conditions |
| Date of Distribution |
5 July 2023 |
| Conference |
| Title of the Conference |
The 2nd International Conference on Cane and Sugar |
| Organiser |
Thailand society of sugarcane technologists |
| Conference Place |
Asawin Grand Convention Hotel |
| Province/State |
Bangkok, Thailand. |
| Conference Date |
5 July 2023 |
| To |
7 July 2023 |
| Proceeding Paper |
| Volume |
2566 |
| Issue |
1 |
| Page |
72 |
| Editors/edition/publisher |
- |
| Abstract |
More than 80 percent of sugarcane plantation in Thailand were grown under rainfed conditions and drought stress normally affect at the early growth stage. Interspecific hybrids sugarcane mostly crossed from Saccharum officianarum and Saccharum spontaneum for many breeding objectives such as multipurpose cane (both of sugar and energy) improve drought resistance level and increase Nitrogen use efficiency. Understanding of Nitrogen use efficiently in different types of sugarcane genotypes is important for sugarcane breeding programs to improve yields under drought conditions. Thus, the objective of this study was to determine Nitrogen use efficiency and cane yield of interspecific hybrids and commercial sugarcane genotypes grown under early drought conditions. The experiment was conducted under field condition at Khon Kaen Field Crops Research Center of Tha Phra Campus, Khon Kaen Province, Thailand from November 2020 to December 2021. The experiment was arranged in a split plot in a randomized complete block design with three replications. The main plot was represented by two drought durations: no water stress (WW), early drought stress (Rainfed; SD), whereas the subplot consisted of six sugarcane clones/varieties: consist of 4 interspecific hybrids (F03-362 (F1), KK99-0358 (BC1), TPJ04-768 (BC1) and KK99-0930 (BC2)) and 2 commercial varieties (KK3 (drought adaptive) and UT12 (drought susceptible)). Plot size was 12 m × 13 m with a spacing of 1.5 m between rows and 0.5 m between plants within a row. Biomass, Nitrogen content (%), Nitrogen uptake (kg/rai) and Nitrogen use efficiency (NUE) (g/g) were measured at 6 months after planting (MAP) (drought stress period) and 12 MAP (recovery and harvest). Cane yield was measured at 12 MAP. At drought stress (6 MAP), biomass, N uptake and NUE were significantly different in water regimes and genotypes (p≤0.01), except N content significantly different in water regimes (p≤0.01). At 12 MAP, water regimes were highly significant different (p≤0.01) in biomass and NUE, while N uptake was significantly different at p≤0.05. The drought stress period (6 MAP), interspecific hybrids genotypes show higher biomass and NUE than those commercial cane especially F03-362 (F1). At harvest (12 MAP), KK3 had high biomass and NUE both of which WW and DS conditions and high cane yield under DS equal to interspecific hybrids genotypes (F03-362 (F1)). |
| Author |
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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
ไทย