| 水分胁迫抑制水稻光合作用的机理 |
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| 引用本文： | 卢从明,王忠.水分胁迫抑制水稻光合作用的机理[J].作物学报,1994,20(5):601-606. |
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| 作者姓名： | 卢从明 王忠 |
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| 作者单位： | 中国科学院植物研究所,北京,100094 |
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| 摘 要： | 水分胁迫降低了水稻的光合速率。轻度水分胁迫下，气孔的限制是光合速率下降的主要原因；而严重水分胁迫下，叶肉细胞光合能力的降低是光合速率下降的主要原因。顺肉细胞光合能力的降低可能是由于光合量子效率、羟化效率、光合电子传递速率及光合磷酸化活力的下降所致。
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| 关 键 词： | 水分胁迫，水稻，光合作用 |
| 收稿时间： | 1993-01-03 |
| 修稿时间： | 1993-03-09 |
The Mechanism for the Inhibition of Photosynthesis in Rice by Water Stress |
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| Lu Cong-ming Zhang Qi-de Kuang Ting-yun.The Mechanism for the Inhibition of Photosynthesis in Rice by Water Stress[J].Acta Agronomica Sinica,1994,20(5):601-606. |
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| Authors: | Lu Cong-ming Zhang Qi-de Kuang Ting-yun |
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| Institution: | Institute of Botany, Academia Sinica, Beijing,100044 |
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| Abstract: | The mechanism for the inhibition of photosynthesis in rice by water stress was studied. Under mild water stress, the decline of photosynthesis was mainly due to the decline of stomatal conductance. However under severe water stress, the principal cause of the reduction in photosynthesis was attributed to the decline of photosynthetic capacity of mesophyll cells. Severe water stress inhibited photosynthetic quantum yield, carboxylation efficiency, electron transport rate, and photophosphorylation activity. |
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| Keywords: | Water stress Rice Photosynthesis |
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