【摘要】 以紫花苜蓿为试材,采用土培试验方法,研究了重金属Zn胁迫对紫花苜蓿体内丙二醛含量、脯氨酸含量、可溶性糖含量和可溶性蛋白质含量的影响及紫花苜蓿对Zn的积累能力。结果表明:胁迫23d时,随锌胁迫浓度的增加,紫花苜蓿不同器官中丙二醛含量、脯氨酸含量、可溶性糖含量和可溶性蛋白质含量增加,同时,紫花苜蓿叶片的锌积累量大于茎和根系的积累量。综合研究表明,在900μM Zn胁迫下,根据渗透调节物质的积累量,可初步判断紫花苜蓿有解毒和积累锌的能力,具有用于修复重金属Zn污染土壤的潜能。更多还原

【Abstract】 Taking Medikago sativa L.as material,the effect of Zinc(Zn)on the proline content,malondialdehyde(MDA) content,soluble protein content and soluble sugar content of MedikagosativaL.and its accumulation abilities of Zn were measured and analyzed using the soil potted culture experiment methods.The results showed that the contents of MDA, proline,soluble protein and soluble sugar significantly increased when the Zn stress increased to 900μM,compared to control(non-Zn),after 23days Zn exposure,the accumulation contents of Zn in leaves were significantly higher than root and stem.Taken together,these results indicated that the Medikago sativa L.was a promising remedial potential for the high level of Zn contamination soil,it was the absorbing and accumulation function for Zn from the contaminated soil.更多还原