| 珍稀濒危植物太行花光合日变化特征研究 |
| |
| 引用本文： | 杜晓华,姚连芳,刘会超.珍稀濒危植物太行花光合日变化特征研究[J].北方园艺,2011(10):67-70. |
| |
| 作者姓名： | 杜晓华 姚连芳 刘会超 |
| |
| 作者单位： | 河南科技学院,园林学院,河南新乡,453003;河南科技学院,园林学院,河南新乡,453003;河南科技学院,园林学院,河南新乡,453003 |
| |
| 基金项目： | 河南科技学院博士科研启动金资助项目(7027) |
| |
| 摘 要： | 利用Li-6400便携式光合作用系统测定了夏季太行花叶叶片光合日变化特征,并采用相关分析和逐步回归法,探讨了太行花叶片净光合速率（Pn）与其它生态因子的关系。结果表明:华北平原地区7月份中午至下午的高温与强光明显抑制了太行花的叶片净光合速率,此时气孔限制增加,气孔导度下降,光能利用率较低,蒸腾作用加强,说明太行花具有阴生植物和不耐高温,性喜冷凉的特点。太行花Pn是多种因子综合作用的结果,其回归方程为:Pn=-44.868+0.954X1+0.195X2+0.120X3+0.001X4（其中X1为气孔导度,X2为蒸腾速率,X3为大气CO2浓度,X4为光合有效辐射）。
|
| 关 键 词： | 太行花 净光合速率 蒸腾速率 |
Photosynthesis Diurnal Variation Characteristics of Taihangia rupestris |
| |
| DU Xiao-hua,YAO Lian-fang,LIU Hui-chao.Photosynthesis Diurnal Variation Characteristics of Taihangia rupestris[J].Northern Horticulture,2011(10):67-70. |
| |
| Authors: | DU Xiao-hua YAO Lian-fang LIU Hui-chao |
| |
| Institution: | DU Xiao-hua,YAO Lian-fang,LIU Hui-chao (College of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang,Henan 453003) |
| |
| Abstract: | The photosynthesis diurnal variation characteristics of Taihangia rupestris introduced from Taihang Mountain were investigated by Li-6400 portable photosynthesis tester in summer.The relations between net photosynthetic rate (Pn)of Taihangia rupestris and other ecological factors were studied by correlation analysis and stepwise regression in the paper.The results showed that the higher temperature and higher PAR from noon till afternoon in July in the plain region of north China was significantly inhibited... |
| |
| Keywords: | Taihangia rupestris Y(u|¨) et Li net photosynthesis rate transpiration rate |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
