印度木豆及丛枝菌根真菌在镉污染土壤中的抗性研究  

Effects of AMF on resistance of pigeonpea to Cd-contaminated soil

作　　者：高丽霞[1] 刘水 陈阳春 莫爱琼[1] 李秀娃[1] 

机构地区：[1]仲恺农业工程学院健康农业研究所,广东广州510225 [2]深圳市铁汉生态环境股份有限公司,广东深圳518034

出　　处：《广东农业科学》2009年第12期180-182,190,共4页Guangdong Agricultural Sciences

基　　金：仲恺农业工程学院2006年省级课题培育项目(G3069154)

摘　　要：以印度木豆为试验材料,采用盆栽方法模拟土壤的镉(Cd)污染状况,研究了丛枝菌根真菌(AMF)及木豆在Cd污染土壤中的抗性。结果表明:AMF对木豆的种苗生长和在Cd污染土壤中的抗性有促进作用;木豆对Cd污染土壤有一定的抗性,当土壤Cd浓度为100 mg/kg时木豆种苗成活率为100%,Cd浓度为500 mg/kg时种苗种植46 d成活率为50%,当Cd浓度达到1 000 mg/kg时种苗种植46 d后基本死亡;适量的重金属Cd对木豆生长有促进作用,当Cd污染浓度为10 mg/kg时,木豆的长势最好,生长量最大。The effects of endogenous cong branched mycorrhizal, arbuscular mycorrhizal fungus （AMF） on resistance of pigeonpea to cadmium （Cd）-eontaminated soil were investigated in the present study. The results showed that the promotion effect of AMF on pigeonpea seedling growth and its resistance to Cd-contaminated soil. Pigeonpea showed a bit of resistance to Cd. At the concentration of 100 mg/kg Cd, the survival rate of pigeonpea seedling reached 100%. The survival rate decreased to 50% 46 d after sowing in the soil at the concentration of 500 mg/kg Cd. At the concentration of 1 000 mg/kg Cd, the seedling died totally 46 d after sowing. The optimum concentration of Cd was useful to promote pigeonpea seedling growth, the growth of pigeonpea seedling peaked in the soil at the concentration of 10mg/kg Cd.

关 键 词：印度木豆 丛枝状内生菌 镉污染土壤 抗性 

分 类 号：X171[环境科学与工程—环境科学]