生态与农村环境学报Issue(5)：760-766,7.DOI:10.11934/j.issn.1673-4831.2015.05.023
柠檬酸和EDTA对蓖麻生理特性和镉累积的影响
Effects of CA and EDTA on Physiological Characteristics and Cd Accumulation of Ricinus communis
摘要
Abstract
A pot experiment was conducted to study effects of citric acid ( CA) and EDTA on physiological characteristics and Cd accumulation of R. communis. Results showed that the application of EDTA alone significantly reduced the biomass of shoots and the content of chlorophyll of R. communis, evidently affected the activity of antioxidant enzyme in leaves of the plant(P<0�05), and even inhibited the activities of SOD and POD, when the application rate reached 10 mmol· kg-1 . The application of EDTA and CA together reduced the toxicity of EDTA to R. communis to a certain extent, the effect of EDTA, at 1 or 5 mmol·kg-1 , lowering the biomass of shoots and the content of chlorophyll of R. communis and the effect of EDTA, at 1 mmol·kg-1 , increasing the content of MDA in the plant. The application of EDTA alone, at 5 mmol·kg-1 , brought Cd accumulation and transfer capacity of the plant to the peak. However, once 2 mmol·kg-1 CA was applied in combination, the effect of EDTA reached a new peak, 3 times as high as in CK. Therefore, combined application of EDTA with CA should be a practice of great potential in enhancing the effect of R. communis remedying Cd polluted soils.关键词
蓖麻/柠檬酸/EDTA/生物量/镉Key words
Ricinus communis/CA/EDTA/biomass/Cd分类
资源环境引用本文复制引用
张玉芬,刘景辉,杨彦明,张雷,李卫红..柠檬酸和EDTA对蓖麻生理特性和镉累积的影响[J].生态与农村环境学报,2015,(5):760-766,7.基金项目
农业部农业环境保护项目（20140420）；国家自然科学基金（31360321）；内蒙古自然科学基金 （）
