| 美丽异木棉光合特性的研究 |
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| 引用本文： | 吴吉林,李永华,叶庆生.美丽异木棉光合特性的研究[J].园艺学报,2005,32(6):1061-1065. |
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| 作者姓名： | 吴吉林 李永华 叶庆生 |
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| 作者单位： | (华南师范大学生命科学学院, 广东省植物发育生物工程重点实验室, 广州510631) |
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| 基金项目： | 广东省自然科学基金项目（003062）;广东省重点科技攻关项目（2002C20120）;广东省自然科学基金重点项目（04105806） |
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| 摘 要： | 对美丽异木棉光合特性进行了研究。结果表明: 美丽异木棉的光饱和点和补偿点分别约为1 600和35μmol·m- 2 ·s- 1 , 表观量子效率为0.0263; CO2 饱和点和补偿点分别约为1 000和59μmol·mol- 1 , 羧化效率为0.0622; 光合适温为24～28℃; 晴天的净光合速率日变化为双峰曲线, 次峰明显低于首峰; Pn季节变化也为双峰曲线; Pn与气孔导度呈显著正相关, 与蒸腾速率、光照强度呈正相关, 与胞间CO2 浓度呈显著负相关, 但与温度的相关性不明显。
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| 关 键 词： | 美丽异木棉 光合特性 生理生态因子 相关性 |
| 文章编号： | 0513-353X（2005）06-1061-04 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-01-172005-03-29 |
Studies on Photosynthesis Characteristics of Chorisia speciosa |
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| Wu Jilin,Li Yonghua,Ye Qingsheng.Studies on Photosynthesis Characteristics of Chorisia speciosa[J].Acta Horticulturae Sinica,2005,32(6):1061-1065. |
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| Authors: | Wu Jilin Li Yonghua Ye Qingsheng |
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| Institution: | 1.Department of Neurology, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou 310000, China;2.Department of Integrated TCM and Western Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China |
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| Abstract: | The photosynthetic characteristics of leaves in Chorisia speciosa were studied. The results were as follow: The light saturated point and compensate point of leaves of Chorisia speciosa were about 1 600 and 35μmol·m- 2 · s- 1 respectively, while the apparent quantum efficiency was 0.0263; The CO2 saturatedpoint and compensate pointwere about 1 000 and 59μmol·mol- 1 respectively, while the carboxying efficiency was 0.0622; The optimal temperature of photosynthesis ability was 24 - 28℃; The diurnal variation of net photosynthetic rate of leaves in sunny days exhibited bimodal curve, with a lower value of the second peak than that of the first peak, whereas, a bimodal curve of the seasonal variation of Pn was observed; Pn had a significantly positive relationship with stomata conductance and a positive relationship with transp iration rate and photosynthetic active radiation, but a obvious negative relationship with intercellular CO2 concentration. The relationship between Pn and air temperature was indefinite. |
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| Keywords: | Chorisia speciosa Photosynthesis characteristics Physo-ecological factor Correlation |
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