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| 不同季节凤丹光合特性的初步研究 | |
| 引用本文： | 毕玉伟,秦俊,王奎玲,胡永红.不同季节凤丹光合特性的初步研究[J].天津农业科学,2011,17(1):18-21. |
| 作者姓名： | 毕玉伟 秦俊 王奎玲 胡永红 |
| 作者单位： | 1. 青岛农业大学园林园艺学院,山东青岛266109;上海植物园,上海200231 2. 上海植物园,上海,200231 3. 青岛农业大学园林园艺学院,山东青岛,266109 |
| 基金项目： | 国家"十一五"科技支撑计划项目,* |
| 摘 要： | 在盆栽条件下研究了5年生牡丹品种凤丹的光合特性,试验采用美国LI-COR公司制造的LI-6400便携式光合仪测定系统,对盆栽凤丹的光合特性进行了初步研究。结果表明,凤丹叶片日变化Pn呈现不对称的双峰曲线,光合速率与蒸腾速率、气孔导度之间呈正相关。凤丹在春季、夏季最高峰分别出现在10:30和8:30左右,次高峰均出现在16:30左右,午间有明显的"午休"现象,且持续的时间较长,根据光响应曲线可以得出凤丹叶片的光饱和点1423.98μmol·m~(-2)·s~(-1)(春季)和1920.90μmol·m~(-2)·s~(-1)(夏季),光补偿点为25.59μmol·m~(-2)·s~(-1)(春季)和19.21μmol·m~(-2)·s~(-1)(夏季)。 |
| 关 键 词： | 凤丹 光合速率 光饱和点 光补偿点 |
Photosynthetic Characteristis of Paeonia ostii in Different Seasons |
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| BI Yu-wei,QIN Jun,WANG Kui-ling,HU Yong-hong.Photosynthetic Characteristis of Paeonia ostii in Different Seasons[J].Tianjin Agricultural Sciences,2011,17(1):18-21. | |
| Authors: | BI Yu-wei QIN Jun WANG Kui-ling HU Yong-hong |
| Institution: | BI Yu-wei~(1,2),QIN Jun~2,WANG Kui-ling~1,HU Yong-hong~2 (1.College of Landscape and Art in Qingdao Agricultural University,Qingdao,Shandong 266109,China,2.Shanghai Botanical Garden,Shanghai 200231,China) |
| Abstract: | The LI-6400 photosythesis system of LI-COR was used to study the photosynthetic characteristics of Paeonia ostii.The results showed that the diurnal changes of photosynthetic rate(Pn) in Paeonia ostii had double-peaks style,and the net photosynthetic rate was positively related to transpiration rate and stomatal conductance.The maximum value of Pn appeared at about 10:30 in spring and 8:30 in summer,and inferior peak occurred at 14:30(Spring and Summer).There was a significant 'siesta phenomenon' lasted lon... |
| Keywords: | Paeonia ostii photosynthetic rate light saturation point light compensation point |
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