Quantifying key model parameters for wheat leaf gas exchange under different environmental conditions
文献类型：期刊论文
| 作者 | Zhao Funian1; Zhou Shuangxi2; Wang Runyuan3; Zhang Kai3; Wang Heling3; Yu Qiang1 |
| 刊名 | Journal of Integrative Agriculture
 |
| 出版日期 | 2020 |
| 卷号 | 19期号:9页码:2188 |
| 关键词 | biochemical photosynthetic model stomatal conductance model maximum carboxylation rate of Rubisco maximum rate of electron transport drought |
| ISSN号 | 2095-3119 |
| 英文摘要 | The maximum carboxylation rate of Rubisco ( V cmax ) and maximum rate of electron transport ( J max ) for the biochemical photosynthetic model, and the slope (m) of the Ball-Berry stomatal conductance model influence gas exchange estimates between plants and the atmosphere. However, there is limited data on the variation of these three parameters for annual crops under different environmental conditions. Gas exchange measurements of light and CO 2 response curves on leaves of winter wheat and spring wheat were conducted during the wheat growing season under different environmental conditions. There were no significant differences for V cmax , J max or m between the two wheat types. The seasonal variation of V cmax , J max and m for spring wheat was not pronounced, except a rapid decrease for V cmax and J max at the end of growing season. V cmax and J max show no significant changes during soil drying until light saturated stomatal conductance ( g ssat ) was smaller than 0.15 mol m ?2 s ?1 . Meanwhile, there was a significant difference in m during two different water supply conditions separated by g ssat at 0.15 mol m ?2 s ?1 . Furthermore, the misestimation of V cmax and J max had great impacts on the net photosynthesis rate simulation, whereas, the underestimation of m resulted in underestimated stomatal conductance and transpiration rate and an overestimation of water use efficiency. Our work demonstrates that the impact of severe environmental conditions and specific growing stages on the variation of key model parameters should be taken into account for simulating gas exchange between plants and the atmosphere. Meanwhile, modification of m and V cmax (and J max ) successively based on water stress severity might be adopted to simulate gas exchange between plants and the atmosphere under drought. |
| 语种 | 英语 |
| WOS记录号 | WOS:000557421300005 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/155823]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.中国科学院地理科学与资源研究所 2.The New Zealand Institute for Plant and Food Research Limited 3.中国地震局地震数据信息中心 |
| 推荐引用方式 GB/T 7714 | Zhao Funian,Zhou Shuangxi,Wang Runyuan,et al. Quantifying key model parameters for wheat leaf gas exchange under different environmental conditions[J]. Journal of Integrative Agriculture,2020,19(9):2188. |
| APA | Zhao Funian,Zhou Shuangxi,Wang Runyuan,Zhang Kai,Wang Heling,&Yu Qiang.(2020).Quantifying key model parameters for wheat leaf gas exchange under different environmental conditions.Journal of Integrative Agriculture,19(9),2188. |
| MLA | Zhao Funian,et al."Quantifying key model parameters for wheat leaf gas exchange under different environmental conditions".Journal of Integrative Agriculture 19.9(2020):2188. |
入库方式： OAI收割
来源：地理科学与资源研究所
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