农业环境科学学报2024，Vol.43Issue(8)：1753-1759,7.DOI:10.11654/jaes.2023-1020
高丹草在低浓度铜-镉-菲复合胁迫下的生长及响应特性
Growth and response characteristics of Sorghum-sudan grass under combined low stress of copper-cadmium-phenanthrene
摘要
Abstract
To study the growth and response characteristics of Sorghum-sudan grass under low concentrations of combined heavy metal-polycyclic aromatic hydrocarbon pollution,the germination rate changes,biomass,accumulation of copper,cadmium and phenanthrene degradation and chlorophyll composition were detected by field experiments.The results showed that the combined stress of 10 mg·kg-1 phenanthrene and 100 mg·kg-1 copper could promote Sorghum-sudan grass growth,increasing the sum of the stem and leaf biomass and the root biomass by 14.7%and 8.1%,respectively.However,cadmium(5 mg·kg-1)inhibited the grass growth.Copper and cadmium accumulated in the roots,and the combined stress of phenanthrene and copper promoted copper migration and increased the phenanthrene removal rate by 40.6%but hindered cadmium migration.Meanwhile,low concentrations of copper and phenanthrene could stimulate the synthesis of chlorophyll a,while the combined stress of copper and cadmium resulted in a chlorophyll b content decrease.Correlation analysis further confirmed the strong correlation between Sorghum-sudan grass growth,pollutant migration,and chlorophyll synthesis.Consequently,Sorghum-sudan grass could grow under a low combined stress of copper-cadmium-phenanthrene and respond to the stress through heavy metal migration,organic metabolism,and changes in chlorophyll content.关键词
高丹草/菲/铜/镉/叶绿素Key words
Sorghum-sudan grass/phenanthrene/copper/cadmium/chlorophyll分类
资源环境引用本文复制引用
苏赛赛,段燕青,杨小晗,高前伟,陈宇铭,项洁..高丹草在低浓度铜-镉-菲复合胁迫下的生长及响应特性[J].农业环境科学学报,2024,43(8):1753-1759,7.基金项目
山西省基础研究计划青年项目(202203021222280) （202203021222280）
山西省高校科技创新项目(2022L549) The Fundamental Research Program of Shanxi Province(202203021222280) （2022L549）
The Scientific and Technological Innovation Program of Higher Education Institutions in Shanxi(2022L549) （2022L549）
