Different responses of two contrasting Populus davidiana populations to exogenous abscisic acid application
文献类型：期刊论文
| 作者 | Li, CY ; Yin, CY ; Liu, SR |
| 刊名 | ENVIRONMENTAL AND EXPERIMENTAL BOTANY
 |
| 出版日期 | 2004 |
| 卷号 | 51期号:3页码:237_246 |
| 关键词 | abscisic acid carbon isotope composition dry matter accumulation and allocation gas exchange Populus davidiana water use efficiency |
| ISSN号 | 0098-8472 |
| 通讯作者 | Li, CY, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China. |
| 中文摘要 | Purpose of this study was to investigate different responses of two contrasting Populus davidiana populations to exogenous abscisic acid (ABA) application under well-watered and water-stressed conditions, and to further elucidate the role of ABA in drought tolerance. Two contrasting populations were from the wet and dry climate regions in China, respectively. Exogenous ABA was applied to the leaves by spraying and changes in plant growth and structure, gas exchange, endogenous ABA concentration and water use efficiency were monitored. The results demonstrated that exogenous ABA application significantly decreased height growth (Ht), total biomass (Tb), total leaf area (La), specific leaf area (Sla), net photosynthesis (A) and transpiration (E), and significantly increased root/shoot ratio (Rs), transpiration efficiency (WUET), instantaneous water use efficiency (WUEI) and carbon isotope composition (delta(13)C) under well-watered and water-stressed conditions. These morphological and physiological responses to exogenous ABA application showed that ABA could play an important role to control drought tolerance in P davidiana populations. However, distinct population differences were found in ABA-induced growth reduction, gas exchange decrease and water use efficiency increase. Compared with the wet climate population, the dry climate population was more responsive to exogenous ABA application, resulting in lower Ht, Tb, La, Sla, A and E, and higher Rs, WUET, WUEi and delta(13)C under all experimental treatments. Our results provide strong evidence for adaptive differentiation between populations of P. davidiana. (C) 2003 Elsevier B.V. All rights reserved. |
| 学科主题 | Plant Sciences; 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/351003/21618]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Li, CY,Yin, CY,Liu, SR. Different responses of two contrasting Populus davidiana populations to exogenous abscisic acid application[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2004,51(3):237_246. |
| APA | Li, CY,Yin, CY,&Liu, SR.(2004).Different responses of two contrasting Populus davidiana populations to exogenous abscisic acid application.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,51(3),237_246. |
| MLA | Li, CY,et al."Different responses of two contrasting Populus davidiana populations to exogenous abscisic acid application".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 51.3(2004):237_246. |
入库方式： OAI收割
来源：成都生物研究所
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