| NaCl对菜豆叶片光合CO2和水分交换效应的研究 |
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| 引用本文： | 冯立田,赵可夫.NaCl对菜豆叶片光合CO2和水分交换效应的研究[J].山东师范大学学报(自然科学版),1999,14(2):180-183. |
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| 作者姓名： | 冯立田 赵可夫 |
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| 作者单位： | 山东大学生命科学学院(冯立田)，山东师范大学逆境植物研究所(赵可夫)，菏泽师范专科学校生物学系(邓振旭) |
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| 摘 要： | ＮａＣｌ处理后，菜豆幼苗叶片的净光合速率降低，叶片的气孔导度和蒸腾速率都大幅下降，幼叶的细胞间隙ＣＯ２浓度降低，光合的气孔限制值升高，而老叶细胞间隙ＣＯ２浓度却升高，光合的气孔限制值降低，ＮａＣｌ处理使幼叶的ＷＵＥ升高，老叶的ＷＵＥ下降，ＮａＣｌ处理下菜豆幼苗对幼叶气孔导度的降低不一定是由其水分关系的改变引起。
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| 关 键 词： | 菜豆 水分交换 氯化钠 叶片 光合速率 二氧化碳 |
STUDY ON THE EFFECTS OF NaCl ON THE PHOTOSYNTHETIC CO 2 AND WATER EXCHANGES IN BEAN LEAVES |
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| Feng Litian,Zhao Kefu,Deng Zhenxu.STUDY ON THE EFFECTS OF NaCl ON THE PHOTOSYNTHETIC CO 2 AND WATER EXCHANGES IN BEAN LEAVES[J].Journal of Shandong Normal University(Natural Science),1999,14(2):180-183. |
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| Authors: | Feng Litian Zhao Kefu Deng Zhenxu |
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| Institution: | Feng Litian 1) Zhao Kefu 2) Deng Zhenxu 3) |
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| Abstract: | The net photosynthetic rate of bean seedling was decreased by NaCl.Leaf stomatal conductance and transpiration rate were obviously decreased.In the younger leaf,the internal CO 2 concentration was decreased by NaCl,the photosynthetic stomatal limitation increased by NaCl.In the older leaf,on the contrary,the former increased,the latter decreased.The water use efficiency in the younger leaf was increased by NaCl,while that of the old leaf decreased by NaCl.Under NaCl stress,the drop of stomatal conductance in the younger bean leaf was not necessarily induced by its water relation change. |
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| Keywords: | Phaseolus vulgaris net photosynthetic rate WUE (water use efficiency) |
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