农业环境科学学报2011，Vol.30Issue(1)：21-28,8.
五节芒(Miscanthus floridulus)不同种群对镉积累与转运的差异研究
Accumulation and Translocation of Cd in Two Miscanthusfioridulus Populations
摘要
Abstract
Growth responses to different Cd contamination levels in soil from 0 to 160 mg· kg-1 were different obviously between two Miscanthus floridulus populations, one was from mine site and other was from non-mine site.Compared to the mine population, the shoot biomass of the non-mine population decreased more significantly under Cd stresses.Under Cd treatment, the shoot biomass of mine and non-mine populations decreased to 57.80％～67.04％ and 30.17％～42.07％ of the CK, respectively.The root biomass of the mine population significantly increased to 117.43％～135.56％ with the increasing Cd concentrations, while the root biomass of the non-mine population significantly decreased to 57.75％～64.08％ compared with the control treatment.Compared to the non-mine population, the Cd concentration in shoot and root of the mine population increased more significantly with the increasing Cd concentrations.The Cd accumulation in shoot and root of the mine population was higher than the non-mine population under Cd stresses.The tolerance index and translocation factor of the mine population was higher than the non-mine population.Pearson correlation analysis found that root biomass and shoot biomass was significantly related.Cd concentration in shoot and root was significantly negative correlated with biomass and tolerant index (TI), while significantly positively correlated with translocation factor(TF).Cd stress inhibited the growth of Miscanthus floridulus.These results indicate that the mine population has an extraordinary ability to tolerate and uptake Cd from soil.关键词
镉/五节芒/积累与转运Key words
cadmium/ Miscanthus floridulus/ accumulation and translocation分类
资源环境引用本文复制引用
秦建桥,夏北成,赵鹏,赵华荣,谢国晖..五节芒(Miscanthus floridulus)不同种群对镉积累与转运的差异研究[J].农业环境科学学报,2011,30(1):21-28,8.基金项目
广东省自然科学基金团队项目(06202438) （06202438）
中山大学"985"工程环境污染控制与修复技术创新平台项目 （）
