| 铅胁迫对空心莲子草生长和生理指标的影响 |
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| 引用本文： | 熊勇,张振宇,杨青松.铅胁迫对空心莲子草生长和生理指标的影响[J].安徽农业科学,2011(17):10380-10382. |
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| 作者姓名： | 熊勇 张振宇 杨青松 |
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| 作者单位： | 云南民族大学民族药资源化学国家民委-教育部重点实验室; |
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| 基金项目： | 国家自然科学基金项目(31060031); 云南民族大学校内青年基金项目(09QN02) |
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| 摘 要： | 目的]研究铅胁迫对空心莲子草生长和生理指标的影响，探究重金属铅污染的植物修复方法。方法]采用不同浓度铅胁迫水培空心莲子草后，观察其外伤症状，并测定其生长指标和生理指标。结果]随着铅胁迫浓度的增加，空心莲子草生物量和叶绿素含量逐渐降低，茎叶电导率和丙二醛含量持续增加，而SOD、POD和CAT活性则先增加后降低。结论]当铅浓度不断增加时，空心莲子草茎叶细胞膜透性增大，丙二醛含量高度积累，抗氧化酶系统活力下降，正常氧化代谢受到严重影响，导致植株枯萎。
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| 关 键 词： | 铅胁迫 空心莲子草 生长特性 生理指标 |
Effect of Lead Stress on Growth Characteristics and Physiological Indexes of Alternanthera philoxeroides |
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| XIONG Yong et al.Effect of Lead Stress on Growth Characteristics and Physiological Indexes of Alternanthera philoxeroides[J].Journal of Anhui Agricultural Sciences,2011(17):10380-10382. |
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| Authors: | XIONG Yong |
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| Institution: | XIONG Yong et al (Key Laboratory of Ethnic Medicine Resource Chemistry,State Ethnic Affairs Commission & Ministry of Education,Yunnan University of Nationalities,Kunming,Yunnan 650031) |
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| Abstract: | Objective] The paper aimed to discuss effects of different concentrations of lead stress on Alternanthera Philoxeroides growth and physiological indices, to explore phytoremediation methods for removal of lead pollution. Method] Alternanthera Philoxeroides in water culture was treated with different concentration of lead, and then, its external injury was observed, its growth and physiological indexes were measured. Result] Alternanthera Philoxeroides biomass and chlorophyll content decreased; conductivi... |
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| Keywords: | Lead stress Alternanthera philoxeroides Griseb Growth characteristics Physiological indexes |
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