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作 者 ：林碧英 张瑜 林义章 肖钊

期 刊 ：植物营养与肥料学报 2011年 17卷 4期 页码：964-969

关键词：豇豆；CO2浓度；光合特性；生理生化指标；

Keywords:cowpea, CO2concentration, photosyntheticcharacteristics, physiologyandbiochemistryindices,

摘 要 ：在南方温室栽培环境下，研究不同CO₂浓度对矮生豇豆幼苗叶片光合特性和生理生化指标的影响。结果表明，不同CO₂浓度下，豇豆叶片光合色素、可溶性糖和可溶性蛋白质含量随CO₂浓度的升高均有不同程度的提高。高CO2浓度还明显提高叶片的光合速率，但蒸腾速率则较对照CK有所下降。在不同CO₂浓度下，超氧化物歧化酶、过氧化物酶、过氧化氢酶活性变化较大，且均以CO₂浓度为1200 mL/m³时活性最高。高浓度CO₂使得豇豆叶片中的丙二醛含量明显降低。

Abstract:The effects of CO₂ concentrations on photosynthetic characteristic and biochemical indices at the dwarf cowpea seedlings were studied in the South Greenhouse. The results show that, under different CO₂ concentrations, the photosynthetic pigment content, soluble sugar content and soluble protein content increased to a different extent with the increase of CO₂ concentrations. High CO₂ concentrations could prominently increase the photosynthetic rate of cowpea, while decrease the transpiration rate compared with the control. SOD, POD, and CAT varied remarkably under different CO₂ concentrations. The maximum enzyme activities were observed at CO₂ concentration 1200 mL/m³. The MDA content decreased significantly in cowpea leaves at the higher concentrations of CO₂.

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