陶玲;任珺;崔桂阳;

• 1:兰州交通大学环境与市政工程学院环境生态研究所
• 2:甘肃高等学校环境科学与技术实验教学示范中心

摘要(Abstract)：

采用水培方法研究了白菜种子和幼苗对Pb的富集能力与耐受性.实验设6个处理浓度,分别为0.2mg·L-1、0.4mg·L-1、0.8mg·L-1、1.6mg·L-1、3.2mg·L-1及对照,共培养7d,然后测定种子萌发抑制率、茎生长抑制率、根的耐性指数、叶绿素与类胡萝卜素含量与铅的富集量.研究表明白菜幼苗对高浓度的Pb具有富集能力,根是主要的富集器官,根的最高富集量为75.46mg·L-1.Pb抑制白菜幼苗的营养生长,抑制白菜根的伸长.0.2mg·L-1处理浓度下,Pb促进白菜茎的生长,高浓度的Pb抑制白菜茎的生长.Pb抑制白菜体内叶绿素a、叶绿素b和类胡萝卜素的含量.铅影响白菜幼苗的正常生长,白菜对铅具有一定耐受性.

关键词(KeyWords)： 种子萌发;重金属;耐性指数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(No.30970490);; 长江学者和创新团队发展计划(No.IRT0966)

作者(Author): 陶玲;任珺;崔桂阳;

Email:

DOI:

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