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首页> 外文会议>International Conference on Advances in Energy, Environment and Chemical Engineering >Effects of Exogenous Melatonin on Photosynthetic Characteristics of Chinese Cabbage Seedlings under Aluminum Stress
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Effects of Exogenous Melatonin on Photosynthetic Characteristics of Chinese Cabbage Seedlings under Aluminum Stress

机译：外源褪黑素对铝胁迫下大白菜幼苗光合特性的影响

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摘要

A pot experiment was conducted to study the effects of exogenous melatonin (MT) on photosynthetic characteristics of Chinese cabbage under aluminum (Al) stress. Five treatments were used in the experiment: leaves were sprayed with 0 (CK), 50, 100, 200 and 400 μmol·L~(-1) concentrations of melatonin solution. The results showed that melatonin enhanced net photosynthetic rate (Pn) and transpiration rate (Tr) of Chinese cabbage significantly. With the increasing of melatonin concentration, photosynthetic capacities of Chinese cabbage seedlings were enhanced. The result of light use efficiency (LUE), water use efficiency (WUE) and stomatal conductance (Gs) were the same as Pn. Spraying different concentrations of melatonin on Chinese cabbage under aluminum stress has not significant effect on CO_2 concentration of intercellular (Ci). Therefore, melatonin could use to enhance the photosynthetic ability of Chinese cabbage, which would help to improve the adaptability of Chinese cabbage, and the best concentration of melatonin was 200 μmol·L~(-1).
机译：进行了一种锅实验，研究外源褪黑素（MT）对铝（Al）胁迫下大白菜光合特性的影响。实验中使用了五种处理：用0（CK），50,100,200和400μmol·L〜（-1）浓度的褪黑激素溶液喷洒叶片。结果表明，褪黑素显着增强了大白菜的净光合速率（PN）和蒸腾速率（TR）。随着褪黑激素浓度的增加，大白菜幼苗的光合能力得到了增强。光利用效率（Lue），水使用效率（WUE）和气孔电导（GS）的结果与PN相同。在铝胁迫下喷涂不同浓度的褪黑素在大白菜下对细胞间（CI）的CO_2浓度没有显着影响。因此，褪黑激素可用于增强大白菜的光合能力，这将有助于提高大白菜的适应性，而最佳褪黑素的浓度为200μmol·L〜（-1）。

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