Physiological and growth responses of Populus davidiana ecotypes to different soil water contents
文献类型：期刊论文
| 作者 | Zhang, X ; Wu, N ; Li, C |
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2005 |
| 卷号 | 60期号:4页码:567_579 |
| 关键词 | abscisic acid carbon isotope composition dry matter accumulation and allocation gas exchange Populus davidiana water use efficiency |
| ISSN号 | 0140-1963 |
| 通讯作者 | Li, C, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China. |
| 中文摘要 | Changes in dry matter accumulation and allocation, gas exchange, abscisic acid content (ABA) and water use efficiency (WUE) of three contrasting Populus davidiana ecotypes were recorded after exposure to five different soil water contents. The ecotypes used were from dry, middle and wet climate regions, respectively. In the controlled environment study, five different soil water contents which were watered to 100%, 80%, 60%, 40% and 20% field capacity were used, respectively. Significant differences in height growth (HT), total biomass (TB), total leaf area (LA), total leaf number (TLN), specific leaf area (SLA), root/shoot ratio (RS), net photosynthesis (A), transpiration (E), stomatal conductance (C), transpiration efficiency (WUET) and instantaneous water use efficiency (WUEi) between the ecotypes were detected under all soil water contents. Ecotypic differences in ABA and carbon isotope composition (delta(13)C) were also detected under low soil water contents, but these differences were not significant under high soil water content. Compared with the wet climate ecotype, the dry climate ecotype had lower HT, TB, LA, TLN, SLA, A, E and C, and higher RS, WUET and WUEi under all soil water contents. On the other hand, the dry climate ecotype also exhibited higher ABA and delta(13)C as affected by low soil water contents than the wet climate ecotype. These morphological and physiological responses to water availability showed that the different ecotypes may employ different survival strategies under drought at the initial phase of seedling growth and establishment. The wet climate ecotype possesses a prodigal water use strategy and quick growth, while the dry climate ecotype exhibits a conservative water use strategies and slow growth. (C) 2004 Elsevier Ltd. All rights reserved. |
| 学科主题 | Ecology; Environmental Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/21788]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Zhang, X,Wu, N,Li, C. Physiological and growth responses of Populus davidiana ecotypes to different soil water contents[J]. JOURNAL OF ARID ENVIRONMENTS,2005,60(4):567_579. |
| APA | Zhang, X,Wu, N,&Li, C.(2005).Physiological and growth responses of Populus davidiana ecotypes to different soil water contents.JOURNAL OF ARID ENVIRONMENTS,60(4),567_579. |
| MLA | Zhang, X,et al."Physiological and growth responses of Populus davidiana ecotypes to different soil water contents".JOURNAL OF ARID ENVIRONMENTS 60.4(2005):567_579. |
入库方式： OAI收割
来源：成都生物研究所
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。