农业环境科学学报2011，Vol.30Issue(12)：2428-2433,6.
印度芥菜生理生化特性及其根区土壤中微生物对Cd胁迫的响应
Effects of Cd Contamination on Number of Microbes, Physiological and Biochemical Characteristics of Brassica juncea
摘要
Abstract
Series of pot experiments were performed to determine the effects of cadmium in soil on chlorophyll content, CAT, POD and SOD activities in Brassicajuncea. The results indicated that tolerance of Brassicajuncea for Cd was stronger. It was able to burgeon and grow all right in the soil added Cd from 0 to 200 mg·kg-1.The biomass of Brassicajuncea taken on principle of parabola changes with Cd concentration in the soil. Nevertheless, Cd influenced the growth stages of Brassicajuncea to postpone its procreating growth. Cd concentration of Brassica juncea gone to increase with the content of Cd in the soil. The contents of Cd was 7.824~102.672 mg·kg-1 in the aboveground parts and 0.374-191.910 mg·kg-1 in the underground parts. The bioaccumulation factor of the ground part was falling and underground part was rising during the Cd is rising. Meanwhile, the translocation factor was 20.920~0.535. It taken on gradually falling trend. The POD, CAT and SOD activities increased at lower Cd concentrations, but decreased at higher Cd concentrations. Added Cd in the soil was 120 mg·kg-1, the POD, CAT and SOD activities was highest. The number of microorganisms was Bacteria>actinomycetes>mould. The number of microbes was increasing during the Cd added in the soil. When the added Cd was more than 160 mg· kg-1, the number of microbes was going down.关键词
印度芥菜/植物修复/胁迫/重金属/生理生化指标/微生物Key words
Brassica juracea/phytoremediation/stress/ heavy metal/physiological and biochemical index/microorganism分类
农业科技引用本文复制引用
杨卓,陈婧,李博文..印度芥菜生理生化特性及其根区土壤中微生物对Cd胁迫的响应[J].农业环境科学学报,2011,30(12):2428-2433,6.基金项目
河北省高等学校科学技术研究青年重金属污染土壤超富集植物的筛选及其对Cd胁迫的响应(2010167) （2010167）
