植物激素、螯合剂复合处理对镉胁迫下籽粒苋生长和富集镉的影响  

Effects of Phytohormones and Chelating Agent Combined Treatments on Growth and Cadmium Accumulation of Grain Amaranth under Cadmium Stress

作　　者：郭梦露 沈国明[1] 王宜磊[1] Guo Menglu;Shen Guoming;Wang Yilei(College of Agricultural and Biological Engineering/Key Laboratory of Plant Biology,Heze University,Heze 274015,China)

机构地区：[1]菏泽学院农业与生物工程学院/植物生物学重点实验室,山东菏泽274015

出　　处：《山东农业科学》2023年第11期151-156,共6页Shandong Agricultural Sciences

基　　金：山东省自然科学基金项目(ZR2022MC203);山东省高校科技计划项目(J14LE54);菏泽学院植物生物学重点实验室资助项目。

摘　　要：为探讨植物激素和螯合剂(EDTA)复合处理对镉胁迫下籽粒苋生长与修复率的影响,本试验以生物量较大的籽粒苋为材料,采用盆栽方法,研究不同复合处理对镉胁迫下籽粒苋生长以及镉富集量的影响。结果表明:与单一Cd^(2+)胁迫处理相比,植物激素和螯合剂的复合处理缓解Cd^(2+)胁迫对籽粒苋生长的影响,使其各部分的生物量增加,增强根部和地上部对Cd^(2+)的吸收和富集,进一步提高了籽粒苋对Cd^(2+)的植物修复效率,且复合处理以根部浇灌方式的修复效率更高。In order to investigate the effects of different phytohormones combined with chelating agent(EDTA)on the growth and remediation efficiency of grain amaranth under cadmium stress,this experiment was conducted taking grain amaranth with large biomass as material and by pot method to study the effects of different combined treatments on the growth and cadmium accumulation amount of grain amaranth under cad-mium stress.The results showed that,compared with the single Cd^(2+)treatment,the combined treatments of phytohormones and chelating agent alleviated the influence of Cd^(2+)stress to the growth of grain amaranth,in-creased the biomass of each part,enhanced the absorption and enrichment of Cd^(2+)in root and shoot,and fur-ther improved the phytoremediation efficiency.The combined treatments had higher remediation efficiency by root watering.

关 键 词：镉胁迫 籽粒苋 植物修复 植物激素 螯合剂 

分 类 号：S519[农业科学—作物学] X503.231[环境科学与工程—环境工程]