| 铜对空心菜光合作用及保护酶活性的影响 |
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| 引用本文： | 张文韬,黄保健,郭世荣,章超,张丽. 铜对空心菜光合作用及保护酶活性的影响[J]. 江苏农业学报, 2010, 26(2) |
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| 作者姓名： | 张文韬 黄保健 郭世荣 章超 张丽 |
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| 作者单位： | 南京农业大学园艺学院,江苏,南京,210095 |
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| 基金项目： | 江苏省农业科技专项项目(R200735);;现代农业产业技术体系建设专项基金项目(NYHYZX09-007) |
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| 摘 要： | 为了解铜对空心菜光合作用及保护酶活性的影响。以空心菜为供试材料,设计施铜浓度0 mg/kg、30mg/kg、80 mg/kg、100 mg/kg、200 mg/kg、400 mg/kg、600 mg/kg、和1 000 mg/kg 8个处理,采用土培方式分析重金属铜对空心菜干重、净光合速率、气孔导度、胞间CO2浓度、蒸腾速率、SOD活性、POD活性的影响。结果表明:空心菜叶片净光合速率、气孔导度和蒸腾速率随施铜浓度的升高而上升,当施铜浓度达到100 mg/kg时,开始下降;施铜浓度为200 mg/kg、400 mg/kg时,空心菜叶片SOD活性相比对照显著升高,而当施铜浓度为600 mg/kg时,SOD活性降低;施铜浓度大于200 mg/kg时,空心菜叶片POD活性相比对照显著升高,说明当土壤中施铜浓度超过200mg/kg时,会对空心菜生长产生不良影响。因此,施较低浓度的铜(≤80 mg/kg)对空心菜生长影响不显著,施较高浓度的铜(≥100 mg/kg)对空心菜的生长有抑制作用。
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| 关 键 词： | 空心菜 光合作用 保护酶活性 |
Effects of Copper on Photosynthesis and Protective Enzyme Activities of Ipomoea aquatica Forsk |
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| ZHANG Wen-tao,HUANG Bao-jian,GUO Shi-rong,ZHANG Chao,ZHANG Li. Effects of Copper on Photosynthesis and Protective Enzyme Activities of Ipomoea aquatica Forsk[J]. Jiangsu Journal of Agricultural Sciences, 2010, 26(2) |
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| Authors: | ZHANG Wen-tao HUANG Bao-jian GUO Shi-rong ZHANG Chao ZHANG Li |
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| Affiliation: | College of Horticulture/a>;Nanjing Agricultural University/a>;Nanjing 210095/a>;China |
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| Abstract: | The effects of soil copper on photosynthesis and protective enzyme activities of Ipomoea aquatica Forsk were investigated under pot conditions.The soil copper concentrations were set as follows: 0 mg/kg,30 mg/kg,80 mg/kg,100 mg/kg,200 mg/kg,400 mg/kg,600 mg/kg and 1 000 mg/kg,and the effect of copper on the dry weight,photosynthesis(Pn),stomatal conductance(Gs),intercellular CO2 concentration(Ci),transpiration rate(Tr) and leaf protective enzyme(SOD,POD) activities of Ipomoea aquatica Forsk were evaluated.R... |
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| Keywords: | Ipomoea aquatica Forsk photosynthesis protective enzyme activity |
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