| 弱光条件下桃光合作用的动态变化及品种差异分析 |
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| 引用本文： | 于桉,孔云,姚允聪.弱光条件下桃光合作用的动态变化及品种差异分析[J].中国农学通报,2005,21(9):242-248,254. |
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| 作者姓名： | 于桉 孔云 姚允聪 |
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| 作者单位： | 1. 北京农学院职业技术学院,北京,102206
2. 北京农学院植物科学技术系,北京,102206 |
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| 基金项目： | 北京自然基金资助项曰（6992008）. |
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| 摘 要： | 就日光温室桃树光合生理进行了详尽的研究,结果表明:1d中叶温与气温以14:00时较高。遮阴明显地降低了到达叶片表面的有效光合辐射、叶温与气温。桃叶片的光合速率日变化为双峰曲线,峰值大约出现在上午10:00与下午14:00时;不同品种弱光下的光合速率有明显的差异,以NJN较高,其次为五月火与麦香。遮阴降低了桃叶片的光合速率,以NJN光合速率降低的较少,说明NJN能适应设施栽培。气孔阻力与蒸腾速率则随着遮阴程度的增加而增加。桃中位叶的光合速率较幼叶高。
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| 关 键 词： | 弱光 桃 光合特性 |
| 收稿时间： | 2005-05-11 |
| 修稿时间： | 2005-05-112005-05-25 |
Analysis of Photosynthesis Characteristics of Various Peach Breeds [P. persica (L.) ]under weak light intensity |
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| YU An,Kong Yun,Yao Yuncong.Analysis of Photosynthesis Characteristics of Various Peach Breeds [P. persica (L.) ]under weak light intensity[J].Chinese Agricultural Science Bulletin,2005,21(9):242-248,254. |
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| Authors: | YU An Kong Yun Yao Yuncong |
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| Institution: | 1.Vacation and technology college, Beijing Agricultural College, Beijing 102206; 2.plant Science and Technology Department, Beijing Agricultural College, Beijing 102206 |
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| Abstract: | The photosynthesis characteristics of peach were investigated, the result was as followed: the photo radiation was higher from 10:00 o'clock to 14:00 o'clock. Leaf temperature and air temperature was higher at 14:00 o'clock. When shaded, all those were decreased. The photosynthesis rate is curved with double apexes at 10:00 o'clock and 14:00 o'clock perspective. The photosynthesis rate of NJN is higher than the others. With weak light, the photosynthesis rate decreased, as for the stoma resistance and transpiration rate, it was revised. The photosynthesis rate of old and young leaf was higher than that of younger leaf. |
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| Keywords: | Weak light Peach Photosynthesis characteristics |
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