土壤-青蒿系统中镉(Cd)迁移规律及Cd对青蒿生长和青蒿素含量的影响  

Accumulation and translocation of cadmium in soil and plant and its effects on growth of Artemisia annua and artemisinin content

作　　者：韩小丽[1,2] 黄璐琦[2] 郭兰萍[2] 李明静[3] 刘绣华[3] 张小波[2] 

机构地区：[1]河南省医药学校,河南开封475001 [2]中国中医科学院中药研究所,北京100700 [3]河南大学化学化工学院天然药物与免疫工程重点实验室,河南开封475001

出　　处：《中国中药杂志》2010年第13期1655-1659,共5页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金项目(30672617);国家重点基础研究发展计划(973)项目(2006CB504700);国家科技支撑计划项目(2006BAI09B03)

摘　　要：目的:研究环境中镉(Cd)在青蒿中的转运规律,及其对青蒿生长发育及其青蒿素含量的影响。方法:设置Cd的质量浓度为0.5,1.5,4.5 mg.kg-1,以Cd(NO3)2.4H2O的形式加入土壤中,在盆栽条件下进行研究。结果及结论:不同Cd水平均抑制了青蒿的生长,整个生长期内,Cd处理组青蒿均表现为生长缓慢,生物量及各项农艺指标降低;Cd在青蒿体内绝大部分保留在根部,向地上部分迁移的较少,当Cd为1.5,4.5 mg.kg-1时,青蒿根部和地上部分的Cd含量比值分别达到1.8∶1,2.3∶1;当Cd为0.5 mg.kg-1时,青蒿素的合成积累显著提高,但其他Cd浓度下青蒿素含量与空白组没有差异。Objective： To study the accumulation and translocation of cadmium in the soil and Artemisia annua,and observe its effects on growth of A.annua and artemisinin content.Method： A.annua were cultivated in pots with Cd concentration at 0.5,1.5,4.5 mg·kg-1 level,respectively.Result and Conclusion： The growth of A.annua was inhibited at all the Cd levels characterized by the decreases of biomass and agronomic parameters;Most of Cd was accumulated in the roots of A.annua,and the ratios of Cd concentrations in roots and aerial part were 1.8∶1 and 2.3∶1 at 1.5,4.5 mg·kg-1 Cd level,respectively.Artemisinin content increased significant at 0.5 mg·kg-1 Cd level,but there were no significant changes comparing with control group other Cd levels.

关 键 词：青蒿 青蒿素 CD Cd迁移 

分 类 号：S567.239[农业科学—中草药栽培]