期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：310
期号：5
页码：1-7
DOI：10.1088/1755-1315/310/5/052033
出版社：IOP Publishing
摘要：In this study, using Sedum aizoon L. as experimental materials. Through hydroponic experiment, the effects of different concentration of pb2+ solution (0, 20, 60, 100, 140mg L−1) on growth and Lead absorption of Sedum aizoon L. was studied. The change law of SOD, POD, and CAT activity influence on chlorophyll. By using atomic absorption spectrometer, the accumulation of Pb was determined. Results showed that with the increase of Pb2+ concentration, the growth of root was inhibited, but plant height was firstly increase and then decrease, the greatest change was 20 mg L−1. Compared with the control, chlorophyll content increased with concentration of Pb2+ first drop after increased. The activity of SOD, POD and CAT enzyme was increased first and then decreased. The Pb content of root increased with the increase of Pb2+ concentration, but Pb content of stem and leaf increased after the first drop, and the content was the largest when the Pb concentration was100 mg L−1. The accumulation of Pb in Sedum aizoon L. leaf. Sedum aizoon L. for Pb tolerated, with concentration of Pb2+ on the transfer coefficient of Pb2+ 0(mg L−1).
