王磊;张菲;王从彦;肖鸿光;石艳春;赵璐璐;杜道林;

• 1:江苏大学环境生态研究所环境与安全工程学院

摘要(Abstract)：

在重金属污染加重及多样化的背景下,入侵植物对本地植物种子萌发和生长的生态毒理效应可能发生改变甚至增强。因此,本文探究了Cu和Cd单污染及其复合污染下入侵植物加拿大一枝黄花叶水提液对其本地近缘种莴苣种子萌发和生长的生态毒理效应。结果表明:加拿大一枝黄花叶水提液处理及3种重金属污染类型和加拿大一枝黄花叶水提液复合处理均显著降低莴苣种子发芽指数,表明重金属和加拿大一枝黄花叶水提液均对莴苣的种子萌发和生长产生明显生态毒理效应。Cu和Cd复合污染下加拿大一枝黄花叶水提液对莴苣幼苗株高产生的生态毒理效应显著大于在Cu和Cd单污染下的生态毒理效应,而在Cu和Cd复合污染下加拿大一枝黄花叶水提液对莴苣幼苗发芽速度指数产生的生态毒理效应也大于在Cu和Cd单污染下的生态毒理效应(未达到显著水平)。这表明在Cu和Cd复合污染下加拿大一枝黄花叶水提液对莴苣种子萌发产生的生态毒理效应大于在Cu和Cd单污染下的生态毒理效应,即Cu和Cd复合污染可能对加拿大一枝黄花对本地植物种子萌发和生长产生的生态毒理效应具有一定的叠加效应。

关键词(KeyWords)： 铜;镉;水提液;加拿大一枝黄花;莴苣;种子萌发

Abstract:

Keywords:

基金项目(Foundation): 江苏大学大学生实践创新训练计划项目(No:201410299157W);; 江苏大学大学生科研立项项目(Y13A228,Y13A229,Y13A232)

作者(Author): 王磊;张菲;王从彦;肖鸿光;石艳春;赵璐璐;杜道林;

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