葫芦藓(Funaria hygrometrica)配子体和孢子体重金属富集特性比较  

Accumulation Characteristic of Heavy Metals Between Gametophytes and Sporophytes of Moss Funaria hygrometrica

作　　者：谢斐[1] 张朝晖[1,2] 

机构地区：[1]贵州省山地环境信息系统与生态环境保护重点实验室,贵阳550001 [2]贵州师范大学生命科学学院,贵阳550001

出　　处：《植物研究》2011年第1期117-120,共4页Bulletin of Botanical Research

基　　金：国家自然科学基金项目[国基(30860025)号];贵州省中长期科技规划重大专项和重点领域培育项目[黔教科(2008)012号];贵州师范大学博士科研启动费资助

摘　　要：通过对湘西茶田钒矿废弃冶炼厂矿渣上葫芦藓的野外生态调查和采集,利用原子吸收光谱仪、电感耦合等离子发射光谱仪和原子荧光光谱仪分析了葫芦藓配子体和孢子体及其基质重金属含量。结果表明葫芦藓配子体和孢子体富集了大量的重金属,各重金属元素在配子体和孢子体间的富集存在较大的差异,配子体比孢子体显著富集重金属元素(p<0.05),Zn和Mn在葫芦藓植物体中比其他重金属元素更高。同时也讨论了重金属在苔藓植物中的富集及生物阻抗的作用。Specimens were collected from abandoned slags in the Chatian Vanadium Deposit in western Hunan Province.Heavy metal concentrations in gametophytes,sporophytes and substrates were quantified by atomic absorption spectrometry,inductively coupled plasma optical emission spectrometer and atomic fluorescence spectrometry.It showed that the moss Funaria hygrometrica gametophytes and sporophytes accumulated considerable concentrations of heavy metals.Each generation had a great difference for accumulating heavy metals,and gametophytes accumulated significantly more heavy metals than sporophytes（p0.05）.Concentrations of Zn and Mn in sporophytes were always higher than concentrations of other heavy metals.We also discuss the bioaccumulation and biological barrier of heavy metals in moss gametophytes and sporophytes.

关 键 词：重金属富集 葫芦藓 孢子体 配子体 ZN MN 

分 类 号：Q948[生物学—植物学]