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土壤干旱对水稻叶片光合速率和碳酸酐酶活性的影响

戴新宾, 翟虎渠, 张红生, 张荣铣

南京农业大学农学系.江苏,南京 210095

摘要

以适应性广的水稻品种“汕优63”为材料,具有较高的光合速率但适应性较差的品系“NAU303”为对照,比较了不同阶段的叶片光合机构对于干旱处理的适应性。结果表明“汕优63”具有较广泛的适应性,在逆境条件下仍能维持较高的光合速率,这可能和叶片中碳酸酐酶活性对逆境的响应程度高有关。这种对干旱逆境的适应性反应只在叶片光合功能的可逆衰退阶段发生。

关键词： 光合作用; 碳酸酐酶; 干旱处理; 适应性; 水稻

Effect of soil drought stress on photosynthetic rate and carbonic anhydrase activity of rice leaf

Dai Xinbin, Zhai Huqu, Zhang Hongsheng, Zhang Rongxian

Agronomy Department,Nanjing Agricultural University.Nanjing 210095,Jiangsu

Abstract

The results showed that Shanyou 63 had more stable photosynthesis than NAU303. After drought treatment, its photosynthetic rate declined only by 33%, while that of NAU303 declined by 76%. The lower sensibility of the former^s photosynthetic rate can be explained by its larger increase in carbonic anhydrase activity under drought stress. This kind of adaptability to soil drought appeared only during the reversible decline phase of leaf photosynthetic function.

Key words: Photosynthesis;Carbonic anhydrase;Drought stress;Adaptation;Rice

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引用本文：

戴新宾, 翟虎渠, 张红生, 张荣铣. 土壤干旱对水稻叶片光合速率和碳酸酐酶活性的影响[J]. 生理学报 2000; 52 (2): .

Dai Xinbin, Zhai Huqu, Zhang Hongsheng, Zhang Rongxian. Effect of soil drought stress on photosynthetic rate and carbonic anhydrase activity of rice leaf. Acta Physiol Sin 2000; 52 (2): (in Chinese with English abstract).