Photosynthesis of Populus euphratica in relation to groundwater depths and high temperature in arid environment, northwest China
文献类型：期刊论文
| 作者 | Zhou ; H. H. ; Chen ; Y. N. ; Li ; W. H. ; Y. P. |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2010 |
| 卷号 | 48期号:2页码:257-268 |
| 关键词 | WATER-STRESS PHOTOSYSTEM-II DROUGHT STRESS LOWER REACHES WINTER-WHEAT GAS-EXCHANGE TARIM RIVER STOMATAL CONDUCTANCE ELECTRON-TRANSPORT MEMBRANE STABILITY |
| ISSN号 | 0300-3604 |
| 通讯作者 | Chen, YN, Chinese Acad Sci, Key Lab Oasis Ecol & Desert Environm, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China |
| 中文摘要 | The photosynthetic characterization of Populus euphratica and their response to increasing groundwater depth and temperature were analyzed based on net photosynthetic rate (P (N)), stomatal conductance (g (s)), intercellular CO2 concentration (C (i)), transpiration rate (E), water use efficiency (WUE) and stomatal limitation (L-s) measured by a portable gas-exchange system (LI-6400) in the lower reaches of the Tarim River. Light-response curves were constructed to obtain light-compensation and light-saturation points (LCP and LSP), maximum photosynthetic rates (P (max)), quantum yields (AQY), and dark respiration rates (R (D)). The growth condition of P. euphratica, soil moisture, and groundwater depth in the plots were analyzed by field investigation. The results showed that the growth condition and photosynthetic characterization of P. euphratica were closely related to groundwater depth. The rational groundwater depth for the normal growth and photosynthesis was 3-5 m, the stress groundwater depth for mild drought was more than 5 m, for moderate drought was more than 6 m, for severe drought was more than 7 m. However, P. euphratica could keep normal growth through a strong drought resistance depended on the stomatal limitation and osmotic adjustment when it faced mild or moderate drought stress, respectively, at a normal temperature (25A degrees C). High temperature (40A degrees C) significantly reduced P (N) and drought stress exacerbated the damage of high temperature to the photosynthesis. Moreover, P. euphratica would prioritize the resistance of high temperature when it encountered the interaction between heat shock and water deficit through the stomata open unequally to improve the transpiration of leaves to dissipate overheating at the cost of low WUE, and then resist water stress through the osmotic adjustment or the stomatal limitation. |
| 学科主题 | 植物生理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9914]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Zhou,H. H.,Chen,et al. Photosynthesis of Populus euphratica in relation to groundwater depths and high temperature in arid environment, northwest China[J]. PHOTOSYNTHETICA,2010,48(2):257-268. |
| APA | Zhou.,H. H..,Chen.,Y. N..,Li.,...&Y. P..(2010).Photosynthesis of Populus euphratica in relation to groundwater depths and high temperature in arid environment, northwest China.PHOTOSYNTHETICA,48(2),257-268. |
| MLA | Zhou,et al."Photosynthesis of Populus euphratica in relation to groundwater depths and high temperature in arid environment, northwest China".PHOTOSYNTHETICA 48.2(2010):257-268. |
入库方式： OAI收割
来源：新疆生态与地理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。