Effects of water stress and nitrogen supply on leaf gas exchange and fluorescence parameters of sophora davidii seedlings
文献类型：期刊论文
| 作者 | Wu, F. Z.1,2; Bao, W. K.1; Li, F. L.1,2; Wu, N.1 |
| 刊名 | Photosynthetica
 |
| 出版日期 | 2008-03-01 |
| 卷号 | 46期号:1页码:40-48 |
| ISSN号 | 0300-3604 |
| 关键词 | Adaptation Chlorophyll fluorescence Intercellular co2 concentration Leaf area Net photosynthetic rate Respiration rate Specific leaf area Stomatal conductance Water use efficiency |
| DOI | 10.1007/s11099-008-0008-x |
| 通讯作者 | Bao, w. k.(baowk@cib.ac.cn) |
| 英文摘要 | Two-month-old seedlings of sophora davidii were subjected to a randomized complete block design with three water (80, 40, and 20 % of water field capacity, i.e. fc80, fc40, and fc20) and three n supply [n0: 0, nl: 92 and nh: 184 mg(n) kg(-1)(soil)] regimes. water stress produced decreased leaf area (la) and photosynthetic pigment contents, inhibited photosynthetic efficiency, and induced photodamage in photosystem 2 (ps2), but increased specific leaf area (sla). the decreased net photosynthetic rate (p (n)) under medium water stress (fc40) compared to control (fc80) might result from stomatal limitations, but the decreased p (n) under severe water deficit (fc20) might be attributed to non-stomatal limitations. on the other hand, n supply could improve photosynthetic capacity by increasing la and photosynthetic pigment contents, and enhancing photosynthetic efficiency under water deficit. moreover, n supply did a little in alleviating photodamages to ps2 caused by water stress. hence water stress was the primary limitation in photosynthetic processes of s. davidii seedlings, while the photosynthetic characters of seedlings exhibited positive responses to n supply. appropriate n supply is recommended to improve photosynthetic efficiency and alleviate photodamage under water stress. |
| WOS关键词 | CHLOROPHYLL FLUORESCENCE ; DROUGHT STRESS ; USE EFFICIENCY ; STOMATAL CONDUCTANCE ; ISOTOPE COMPOSITION ; STABLE CARBON ; ELEVATED CO2 ; PHOTOSYNTHESIS ; LIMITATIONS ; NUTRITION |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000253976500008 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2387498 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Bao, W. K. |
| 作者单位 | 1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, F. Z.,Bao, W. K.,Li, F. L.,et al. Effects of water stress and nitrogen supply on leaf gas exchange and fluorescence parameters of sophora davidii seedlings[J]. Photosynthetica,2008,46(1):40-48. |
| APA | Wu, F. Z.,Bao, W. K.,Li, F. L.,&Wu, N..(2008).Effects of water stress and nitrogen supply on leaf gas exchange and fluorescence parameters of sophora davidii seedlings.Photosynthetica,46(1),40-48. |
| MLA | Wu, F. Z.,et al."Effects of water stress and nitrogen supply on leaf gas exchange and fluorescence parameters of sophora davidii seedlings".Photosynthetica 46.1(2008):40-48. |
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来源：中国科学院大学
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