Response of gas exchange and yield components of field-grown Triticum aestivum L. to elevated ozone in China
文献类型：期刊论文
| 作者 | Feng, Z.-Z. ; Yao, F.-F. ; Chen, Z. ; Wang, X.-K. ; Meng, Q.-W. ; Feng, Z.-W. |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2007-06-29 |
| 卷号 | 45期号:3页码:441-446 |
| 关键词 | apparent quantum yield diurnal pattern of O-3 net photosynthetic rate irradiance stomatal conductance yield components |
| 英文摘要 | To assess photosynthesis and yield components' response of field-grown wheat to increasing ozone (03) concentration (based on diurnal pattern of ambient O-3) in China, winter wheat (Triticum aestivum L.) cv. Jia 403 was planted in open top chambers and exposed to three different O-3 concentrations: O-3-free air (CF), ambient air (NF), and O-3-free air with additional O-3 (CF+O-3). Diurnal changes of gas exchange and net photosynthetic rate (P-N) in response to photosynthetic photon flux density (PPFD) of flag leaves were measured at the filling grain stage, and yield components were investigated at harvest. High O-3 concentration altered diurnal course of gas exchange [PN, stomatal conductance (g,), and intercellular CO2 concentration (C-i)] and decreased significantly their values except for C-i. Apparent quantum yield (AQY), compensation irradiance (CI), and saturation irradiance (SI) were significantly decreased, suggesting photosynthetic capacity was also altered, characterized as reduced photon-saturated photosynthetic rate (P-Nmax). The limit of photosynthetic activity was probably dominated by non-stomatal factors in combination with stomatal closure. The significant reduction in yield was observed in CF+O-3 treatment as a result of a marked decrease in the ear length and the number of grains per ear, and a significant increase in the number of infertile florets per ear. Even though similar responses were also observed in plants exposed to ambient O-3 concentration, no statistical difference was observed at current ambient O-3 concentration in China. |
| WOS记录号 | WOS:000248975800016 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22384]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Feng, Z.-Z.,Yao, F.-F.,Chen, Z.,et al. Response of gas exchange and yield components of field-grown Triticum aestivum L. to elevated ozone in China[J]. PHOTOSYNTHETICA,2007,45(3):441-446. |
| APA | Feng, Z.-Z.,Yao, F.-F.,Chen, Z.,Wang, X.-K.,Meng, Q.-W.,&Feng, Z.-W..(2007).Response of gas exchange and yield components of field-grown Triticum aestivum L. to elevated ozone in China.PHOTOSYNTHETICA,45(3),441-446. |
| MLA | Feng, Z.-Z.,et al."Response of gas exchange and yield components of field-grown Triticum aestivum L. to elevated ozone in China".PHOTOSYNTHETICA 45.3(2007):441-446. |
入库方式： OAI收割
来源：生态环境研究中心
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