| 水稻剑叶取向对其光合功能的影响 |
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| 引用本文： | 陈悦,王学华,廖轶,蔡时青,张海波,许大全.水稻剑叶取向对其光合功能的影响[J].植物生理与分子生物学学报,2002,28(5):396-398. |
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| 作者姓名： | 陈悦 王学华 廖轶 蔡时青 张海波 许大全 |
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| 作者单位： | 1. 中国科学院上海生命科学研究院植物生理生态研究所,上海,200032
2. 中国国家杂交水稻研究发展中心,长沙,410125 |
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| 基金项目： | 国家重点基础研究发展规划项目 (No .G19980 10 10 0 )资助。 |
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| 摘 要： | 水稻的水平剑叶净光合速率 (Pn)和羧化效率(CE)显著高于直立剑叶 ,其胞间CO2 浓度 (Ci)显著低于直立剑叶 ,但两者的气孔导度 (Gs)没有明显差别。这表明剑叶取向对水稻叶片的光合能力有重要影响。水平剑叶的高Pn可能同其RuBP羧化酶含量和活性高有关。这可能是水平叶生长期间吸收光量较多的结果。
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| 关 键 词： | 水稻 直立叶 水平叶 净光合速率 羧化效率 |
| 修稿时间： | 2002年5月21日 |
Effect of Flag Leaf Orientation on Its Photosynthetic Capacity in Rice |
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| CHEN Yue,WANG Xue-Hua,LIAO Yi,CAI Shi-Qing,ZHANG Hai-Bo,XU Da-Quan.Effect of Flag Leaf Orientation on Its Photosynthetic Capacity in Rice[J].Journal Of Plant Physiology and Molecular Biology,2002,28(5):396-398. |
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| Authors: | CHEN Yue WANG Xue-Hua LIAO Yi CAI Shi-Qing ZHANG Hai-Bo XU Da-Quan |
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| Institution: | CHEN Yue1 WANG Xue-Hua2 LIAO Yi1 CAI Shi-Qing1 ZHANG Hai-Bo1 XU Da-Quan 1* |
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| Abstract: | Compared with vertical flag leaf, horizontal flag leaf (Fig.1) of rice had a significantly higher net photosynthetic rate (Pn), carboxylation efficiency (CE), and significantly lower intercellular CO 2 concentration (Ci), but similar stomatal conductance (Gs) (Fig.2 and Fig.3). It appears that the leaf orientation has an important effect on the photosynthetic capacity in rice leaf, and the significantly higher Pn of horizontal flag leaf may be related to its higher RuBPCase content and activity due to much more irradiance to be absorbed during growth. |
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| Keywords: | rice vertical flag leaf horizontal flag leaf net photosynthetic rate carboxylation efficiency |
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