دورية أكاديمية
Response of WUE of maize at ear stage to the coupling effect of CO2 and temperature
| العنوان: | Response of WUE of maize at ear stage to the coupling effect of CO2 and temperature |
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| المؤلفون: | Sicong Sun, Xinquan Hu, Yongsheng Wei, Xiaoxiao Chen, Yanzheng Li, Jun Cao |
| المصدر: | Heliyon, Vol 10, Iss 1, Pp e23646- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Science (General) LCC:Social sciences (General) |
| مصطلحات موضوعية: | CO2 concentration, Maize, Response model, Temperature, WUE, Science (General), Q1-390, Social sciences (General), H1-99 |
| الوصف: | In the face of global warming, the photosynthesis and transpiration of plants will change greatly, which will ultimately affect the water use efficiency (WUE) of plants. In order to study the coupling effects of CO2 and temperature on WUE of maize at ear stage, ‘Zhengdan 958’ was taken as the research object, and 5 temperatures (20 °C, 25 °C, 30 °C, 35 °C and 40 °C) and 11 CO2 concentration (400, 300, 200, 150, 100, 50, 400, 400, 600, 800 and 1000 μmol mol−1) were set to measure the parameters such as net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and intercellular CO2 concentration (Ci) of single leaves. The response of WUE (Pn/Tr) to CO2 and temperature was evaluated by a CO2 response model. The results show that at the same temperature, Pn and WUE increased with CO2 level, while Tr decreased as CO2 level increases; at the same CO2 concentration, Pn and Tr were both positively correlated with temperature, while WUE decreased with the increase of temperature. The maximum value of WUE was obtained when the CO2 concentration was 1000 μmol mol−1 and the temperature was 20.0 °C. The results suggest that global warming will not improve WUE of maize, which will bring more severe challenges to water-saving agriculture and food security. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2405-8440 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2405844023108541; https://doaj.org/toc/2405-8440 |
| DOI: | 10.1016/j.heliyon.2023.e23646 |
| URL الوصول: | https://doaj.org/article/668dc346a70d45ebb6a4c5502088cf61 |
| رقم الأكسشن: | edsdoj.668dc346a70d45ebb6a4c5502088cf61 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 24058440 |
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| DOI: | 10.1016/j.heliyon.2023.e23646 |