The effects of different electrode materials on seed germination of Solanum nigrum L.and its Cd accumulation in soil  

作　　者：Lei Xu Huiping Dai Lidia Skuza Shuhe Wei 

机构地区：[1]Key Laboratory of Pollution Ecology and Environment Engineering,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China [2]College of Biological Science&Engineering,Shaanxi Province Key Laboratory of Bio-resources,Shaanxi University of Technology,Hanzhong 723001,China [3]Institute of Biology,Centre for Molecular Biology and Biotechnology,University of Szczecin,Szczecin 71-415,Poland [4]University of Chinese Academy of Sciences,Beijing 100039,China

出　　处：《Journal of Environmental Sciences》2022年第3期291-299,共9页环境科学学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.31870488,41571300);the Open Fund of Cultivation State Key Laboratory of Qinba Biological Resources and Ecological Environment of Shaanxi University of Technology(No.SLGPT2019KF04-02);the project of Foreign Experts Bureau of Shaanxi province of China(No.G20200241015).

摘　　要：The effects of different electrode on Solanum nigrum L.seed germination were determined.The result showed that germination percentage(GP)of seeds in treatment T2(titanium elec-trode)was 26.6%higher than in control(CK,without electric field).High potassium and calcium concentrations were beneficial for seed enzymatic activity in treatment T2,which could partly explain the increase in GP.Cd accumulation(μg/pot)in S.nigrum treated with any electric field was significantly higher(p<0.05)than in CK without electric field.Specif-ically,Cd accumulation under the treatment T3(stainless steel electrode)was the highest both in roots and shoots;this accumulation in shoots and roots were 74.7%and 67.4%higher for stainless steel than in CK.This increase must have been associated with a higher Cd concentration in plants and did not exert a significant effect on the biomass.In par-ticular,Cd concentrations in roots and shoots under stainless steel treatment were both significantly higher than in CK(p<0.05),which had to be related to the higher available Cd concentration in the soil in the middle region.Furthermore,it could be attributed to al-tered soil pH and other soil properties.Moreover,none of the biomasses were significantly affected(p<0.05)by different electrode materials compared to CK.

关 键 词：Cd contaminated soil Solanum nigrum L. DC electric field Electrode materials Seed germination 

分 类 号：X53[环境科学与工程—环境工程]