| 3种橐吾属植物光合特性 |
| |
| 引用本文： | 董然,付跃为,赵子文,刘洪章.3种橐吾属植物光合特性[J].东北林业大学学报,2010,38(12). |
| |
| 作者姓名： | 董然 付跃为 赵子文 刘洪章 |
| |
| 作者单位： | 吉林农业大学,长春,130118;长春净月开发区新湖镇人民政府 |
| |
| 基金项目： | 环保部科技支撑项目(物种09-二-3-1)资助 |
| |
| 摘 要： | 利用Li-6400光合测定系统对苗龄180 d的蹄叶橐吾、多毛蹄叶橐吾和狭苞橐吾盆苗的光合作用日变化规律进行研究。结果表明:①3种橐吾的净光合速率(Pn),气孔导度(Gs)的日变化均为"双峰"型曲线,峰值出现在9:00和15:00时,13:00时左右存在明显的"午休"现象,但不同橐吾的净光合速率和气孔导度的高峰和谷底的高低不同,净光合速率大小依次为:多毛蹄叶橐吾蹄叶橐吾狭苞橐吾;②根据Pn、Gs、胞间CO2浓度(Ci)的变化方向,推测3种橐吾的光合"午休"主要受气孔因素限制;③相关性分析表明,3种橐吾Pn与其影响因子Gs之间呈极显著正相关关系,与其他因子呈不显著正或负相关关系;蒸腾速率(Tr)与其影响因子光照强度(PAR),大气温度(Ta),大气湿度(RH)成极显著和显著正相关关系。
|
| 关 键 词： | 橐吾属 光合特性 日变化 |
Photosynthetic Characteristics of Three Species of Ligularia |
| |
| Dong Ran,Fu Yuewei,Zhao Ziwen,Liu Hongzhang.Photosynthetic Characteristics of Three Species of Ligularia[J].Journal of Northeast Forestry University,2010,38(12). |
| |
| Authors: | Dong Ran Fu Yuewei Zhao Ziwen Liu Hongzhang |
| |
| Institution: | Dong Ran,Fu Yuewei(College of Horticulture,Jilin Agricultural University,Changchun 130118,P.R.China),Zhao Ziwen(the People's Government of Xinhu Town,Jingyue Development Zone of Changchun),Liu Hongzhang(Jilin Agricultural University) |
| |
| Abstract: | Regularity in the diurnal variation of photosynthetic characteristics of 180-day-old seedlings of Ligularia fischeri,L.fischeri f.diabolica and L.intermedia was studied using Li-6400 photosynthesis system.Results showed that the curves of diurnal variation for net photosynthetic rate and stomatal conductance of leaves of the three species of Ligularia had two peaks which appeared at 9:00 and 13: 00,and an obvious midday depression was found at 13: 00.The three species of Ligularia exhibited different peak a... |
| |
| Keywords: | Ligularia Photosynthetic characteristics Diurnal variations |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
