三种草坪草种子对重金属镉·铅胁迫的反应  

Study on Response of Three Turf Seeds in Cd、Pb^(2+) Stress

作　　者：吴丽芳[1] 陆伟东[1] 

机构地区：[1]曲靖师范学院生物资源与环境科学学院,云南曲靖655011

出　　处：《安徽农业科学》2012年第22期11358-11359,11366,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究高羊茅、紫羊茅、匍匐翦股颖对重金属镉、铅胁迫的反应。[方法]以坪用高羊茅、紫羊茅、匍匐翦股颖为试验材料,研究重金属镉、铅胁迫对其种子萌发的影响。[结果]不同种子对重金属胁迫的响应不同,镉铅相比,铅对植物的抑制效应较大,匍匐翦股颖对2种重金属离子相对敏感,且浓度达300 mg/L时,种子几乎不发芽,即使发芽,质量较差;3种草籽相比,对镉、铅的耐受性大小分别为高羊茅>紫羊茅>匍匐剪股颖。[结论]该研究为重金属污染区坪用草种的生态适应性及抗逆性选育提供理论依据。[Objective] The research aimed to study the response of three turf seeds in heavy metal Cd,Pb^2＋ stress.[Method]Festuca arundinacea,Festuca rubra L.and Agrostis stolonifera L.were used as test material,the effect of heavy metal Cd,Pb^2＋ on seed germination were studied.[Result]The results showed different seeds had different response in heavy metal stress.Compared with cadmium,Inhibition effect of lead was larger.Agrostis stolonifera L.was sensitive to two heavy metals.when concentration of two heavy metals were up to 300 mg/L,seeds germinated scarcely.Even if seeds could germinate,Its quality was poor.Three seeds compared,Festuca arundinacea was most tolerate to cadmium and lead,second was Festuca rubra L.,last was Agrostis stolonifera L..[Conclusion] The study provides the theoretical basis for he ecological adaptability and resistance breeding of turf grass species in heavy metal contaminated area.

关 键 词：高羊茅 紫羊茅 匍匐翦股颖 镉、铅胁迫 萌发 

分 类 号：S154.1[农业科学—土壤学]