| 高温对曼地亚红豆杉叶绿素荧光参数的影响 |
| |
| 引用本文： | 鲍思伟,谈锋.高温对曼地亚红豆杉叶绿素荧光参数的影响[J].福建林业科技,2009,36(3). |
| |
| 作者姓名： | 鲍思伟 谈锋 |
| |
| 作者单位： | 1. 西南大学生命科学学院三峡库区生态环境教育部重点实验室,重庆400715;台州学院生命科学学院,浙江临海317000
2. 西南大学生命科学学院三峡库区生态环境教育部重点实验室,重庆,400715 |
| |
| 基金项目： | 国家863计划资助项目，浙江省教育厅科研计划资助项目 |
| |
| 摘 要： | 以曼地亚红豆杉(Taxus mediacv.DGS)为材料,通过测定高温胁迫下曼地亚红豆杉叶绿素荧光参数的变化,探讨高温对曼地亚红豆杉光合作用的抑制机制。结果表明,高温胁迫下,Fv/Fo、Fv/Fm、Fv’/Fm’、qP以及ΦPSⅡ和ETR都有所下降,qN以及D和E都逐渐上升。高温抑制光合作用的原因之一是导致PSⅡ反应中心活性下降,光化学电子传递速率降低,另外,高温还影响了PSⅠ和PSⅡ的激发能分配平衡。
|
| 关 键 词： | 曼地亚红豆杉 高温胁迫 叶绿素荧光参数 |
Effects of High Temperature on Taxus media Chlorophyll Fluorescence Parameters |
| |
| Bao Si-wei,TAN feng.Effects of High Temperature on Taxus media Chlorophyll Fluorescence Parameters[J].Journal of Fujian Forestry Science and Technology,2009,36(3). |
| |
| Authors: | Bao Si-wei TAN feng |
| |
| Institution: | Bao Si-wei1,2,TAN feng1(1.School of Life Science,Southwest University,Key Laboratory of Eco-Envionment in Three Gorges Reservoir Region,Ministry ofEducation,Chongqing 400715,China,2.College of Life Science,Taizhou University,Linhai 317000,Zhejiang,China) |
| |
| Abstract: | Taking Taxus media as the material,by monitoring the variation of chlorophyll fluorescence parameters of T.media on heat stress,this paper discussed the inhibition mechanism of the photosynthesis of T.media on heat stress.The results showed that Fv/Fo,Fv/Fm,Fv'/Fm',qP,ΦPSⅡ and ETR decreased with heat stress,qN,D and E increased gradually,the reason why photosynthesis was suppressed was high temperature,which might cause the decrease of the activity of PSⅡ reaction center,and the suppress of photochemical electron transfer rate.Distribution balance of excitation energy between PSⅠ and PSⅡ was influenced by high temperature as well. |
| |
| Keywords: | Taxus media High temperature stress Chlorophyll fluorescence parameter |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
