中国麻业科学2017，Vol.39Issue(5)：227-233,7.
镉胁迫对大麻幼苗生长及生理生化影响
Effect of Growth and Physiology-Chemistry of Hemp (Cannabis sativa) Seedlings under Cadmium Stress
摘要
Abstract
Three main cultivars of Hemp (Yunma No.1,Qingdama,Wandama No.1) were employed to analyze changes of seed germination in response to CdCl2 stress with different concentrations (5 μmol/L,20 μmol/L and 50 μmol/L).The Hemp of "Yunma No.1" was used to study seedling growth,3,3'-diaminobenzidine staining on roots and leaves,MDA content,and physiological properties in response to cadmium stress with different concentrations (5 μmol/L,20 μ mol/L and 50 μmol/L).The results shows:The rate of seed germination decreased with the increase of cadmium concentration,and the germination rate was as follows:Yunma No.1 ＞ Qingdama ＞ Wandama No.1.The root elongation of "Yunma No.1 "decreased remarkably under each CdCl2 concentration in comparison with control;meanwhile,high concentration of CdCl2 induce lipid peroxidation,deep staining,and the MDA content of root and leaves was significantly increased at 20 μmol/L,50 μmol/L CdCl2 treatment compared with control.In addition,cadmium stress induced the activity of SOD and POD in roots and leaves of "Yunma No.1" which increased first and then decreased.In conclusion,cadmium stress inhibited the seed germination and the seedlings elongation of "Yunma No.1";deep staining and the incresing of MDA content may be associated with lipid peroxidation,destruction of cell membrane integrity caused by cadmium stress.Additionally,the root and leaves of hemp can reduce the activity of reactive oxygen species,decrease the lipid peroxidation and protect itself from oxidative damage by increasing the activities of SOD and POD.关键词
大麻/镉胁迫/生理生化反应Key words
hemp/cadmium stress/physiology-chemistry reaction分类
农业科技引用本文复制引用
黄玉敏,邓勇,李德芳,赵立宁,唐慧娟,黄思齐..镉胁迫对大麻幼苗生长及生理生化影响[J].中国麻业科学,2017,39(5):227-233,7.基金项目
国家重点研发计划专项(2017YFD0801105) （2017YFD0801105）
