重金属Pb胁迫对草坪草生长·抗氧化生理特性的影响  

Influence of Heavy Metal Pb Stress on Growth and Antioxidative Physiology of Turf Grass

作　　者：沈高峰[1] 

机构地区：[1]天津农学院职业技术学院,天津300380

出　　处：《安徽农业科学》2011年第24期14757-14760,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]了解Pb污染对草坪草生长的影响。[方法]通过盆栽试验,研究不同浓度Pb对高羊茅和多年生黑麦草生长及抗氧化生理特性的影响。[结果]在Pb胁迫处理下,高羊茅和多年生黑麦草随着Pb离子浓度的增加和胁迫时间的延长生物量减少,超氧化物歧化酶和过氧化物酶呈先高后低的趋势,丙二醛含量则逐步递增。[结论]重金属胁迫对高羊茅和多年生黑麦草影响明显,尤其在高浓度和长时间胁迫下,草坪草体内活性氧自由基大量积累,引起SOD和POD活性下降,导致细胞质膜被破坏,高羊茅的生长受到明显抑制。[Objective] The research aimed to study the influence of Pb stress on the growth of turf grass.[Method] Through the pot experiment,the effects of Pb ion in different concentrations on the growth and antioxidative physiology of Stipa grandis and Lolium perenne were studied.[Result] With the increasing concentration of Pb ion and the extension of time,the fresh weight of Stipa grandis and Lolium perenne reduced.SOD and POD showed a trend of first rising and then falling.The content of MDA gradually increased.[Conclusion] Heavy metal obviously influenced the growth of Stipa grandis and Lolium perenne.Especially under the intimidation of high-concentration and extension of time,the growth of Stipa grandis was obviously inhibited.

关 键 词：重金属 PB胁迫 草坪草 抗氧化生理特性 

分 类 号：X171.4[环境科学与工程—环境科学]