Early growth, dry matter allocation and water use efficiency of two sympatric Populus species as affected by water stress
文献类型：期刊论文
| 作者 | Yin, CY ; Wang, X ; Duan, BL ; Luo, JX ; Li, CY |
| 刊名 | ENVIRONMENTAL AND EXPERIMENTAL BOTANY
 |
| 出版日期 | 2005 |
| 卷号 | 53期号:3页码:315_322 |
| 关键词 | carbon isotope composition dry matter allocation early growth Populus cathayana Populus przewalskii 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 | We exposed cuttings of two sympatric species of Sect. Tacamahaca Spach, Populus cathayana Rehder and Populus przewalskii Maximowicz, to two watering regimes in a greenhouse. In the semi-controlled environmental study, two watering treatments which were watered to 100 and 25% of field capacity were used, respectively. The effects of water deficit on early growth, biomass allocation and water use efficiency (WUE) were investigated. We found that there were significant interspecific differences in early growth, dry matter allocation and water use efficiency between two sympatric Populus species. Compared with P. cathayana, P. przewalskii showed higher shoot height, dry matter accumulation, number of leaves, total leaf area, fine root mass, fine root/total root ratio and water use efficiency under both well-watered and water-stressed treatments. On the other hand, P. przewalskii also showed higher root mass/foliage area ratio, root/shoot ratio and carbon isotope composition than P. cathayana under water-stressed treatment. The results suggested that there were different water-use strategies between two sympatric Populus species, P. przewalskii with higher drought tolerance may employ a conservative water-use strategy, whereas P. cathayana with lower drought tolerance may employ a prodigal water-use strategy. The findings confirm the existence of interspecific genetic differences in early growth, dry matter allocation and water use efficiency as affected by water stress, these variations in drought responses may be used as criteria for species selection and tree improvement. © 2004 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/351003/21780]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Yin, CY,Wang, X,Duan, BL,et al. Early growth, dry matter allocation and water use efficiency of two sympatric Populus species as affected by water stress[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2005,53(3):315_322. |
| APA | Yin, CY,Wang, X,Duan, BL,Luo, JX,&Li, CY.(2005).Early growth, dry matter allocation and water use efficiency of two sympatric Populus species as affected by water stress.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,53(3),315_322. |
| MLA | Yin, CY,et al."Early growth, dry matter allocation and water use efficiency of two sympatric Populus species as affected by water stress".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 53.3(2005):315_322. |
入库方式： OAI收割
来源：成都生物研究所
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