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| 干旱胁迫对胡杨和灰叶胡杨光合作用及叶绿素荧光特性的影响 | |
| 引用本文： | 李志军,罗青红,伍维模,韩路.干旱胁迫对胡杨和灰叶胡杨光合作用及叶绿素荧光特性的影响[J].干旱区研究,2009,26(1). |
| 作者姓名： | 李志军 罗青红 伍维模 韩路 |
| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072;新疆生产建设兵团,塔里木盆地生物资源保护与利用重点实验室,新疆,阿拉尔,843300;塔里木大学,植物科技学院,新疆,阿拉尔,843300 2. 塔里木大学,植物科技学院,新疆,阿拉尔,843300;石河子大学生物工程学院,新疆,石河子,832003 3. 新疆生产建设兵团,塔里木盆地生物资源保护与利用重点实验室,新疆,阿拉尔,843300;塔里木大学,植物科技学院,新疆,阿拉尔,843300 |
| 基金项目： | 水资源与水电工程科学国家重点实验室开放研究基金，塔里木大学校长基金 |
| 摘 要： | 采用盆栽试验,研究正常供水(土壤相对含水量70%～80%)、轻度干旱胁迫(50%～60%)和重度干旱胁迫(30%～40%)条件下2年生胡杨(Populus euphratica)和灰叶胡杨(P. pruinosa)的光合作用及叶绿素荧光特性.结果表明:在干旱胁迫进程中,轻度和重度干旱胁迫下胡杨、灰叶胡杨的净光合速率经历了急剧下降--缓慢回升--下降3个阶段.在相同的干旱胁迫处理下,光合作用及叶绿素荧光参数Pn,Gs,Ci,WUE,Fv/Fm,Fv/Fo,qP和NPQ胡杨明显高于灰叶胡杨,表明胡杨比灰叶胡杨对干旱胁迫具有更强的适应性. |
| 关 键 词： | 胡杨(Populus euphratica) 灰叶胡杨(Populus pruinosa) 干旱胁迫 光合作用 叶绿素荧光 |
The Effects of Drought Stress on Photosynthetic and Chlorophyll Fluorescence Characteristics of Populus euphratica and P. pruinosa |
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| LI Zhi-jun,LUO Qing-hong,WU Wei-mo,HAN Lu.The Effects of Drought Stress on Photosynthetic and Chlorophyll Fluorescence Characteristics of Populus euphratica and P. pruinosa[J].Arid Zone Research,2009,26(1). | |
| Authors: | LI Zhi-jun LUO Qing-hong WU Wei-mo HAN Lu |
| Institution: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Sciences;Wuhan 430072;China;2.Tarim Basin Key Laboratatory of Protection and Utilization of Biological Resources;Xinjiang Production &Construction Corps;Aral 843303;Xinjiang;3.College of Plant Science and Technology;Tarim University;Aral 843300;4.College of Bioengineering;Shihezi University;Shihezi 832003;China |
| Abstract: | In this study,two-year-old Populus euphratica and P.pruinosa seedlings were grown in pots with varying levels of drought stress to evaluate the effects of drought on photosynthesis and chlorophyll fluorescence.Specifically,the seedlings were subjected to one of the three following water treatments for 48 h: 70%~80%(normal water supply),50%~60%(moderate drought stress) and 30%~40%(severe stress) of the field water holding capacity.The results revealed that the Pn values of P.euphratica and P.pruinosa passed ... |
| Keywords: | Populus euphratica Populus pruinosa drought stress photosynthesis chlorophyll fluorescence |
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