摘要
利用盆栽试验,以花育33号为供试品种,研究不同施镁量对花生叶片膜脂过氧化程度及抗氧化酶活性的影响。结果表明,在缺镁胁迫下,花生叶片内脯氨酸(Pro)含量升高,丙二醛(MDA)含量积累,膜脂过氧化程度加重,产生的活性氧物质诱导超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性暂时升高;适量施镁可以降低花生叶片中的MDA含量,提高SOD、过氧化物酶(POD)、CAT的活性,有利于提高花生抵抗膜脂过氧化的能力,提高花生叶片生理活性,延缓衰老;不同施镁量对于花生叶片中POD的活性影响不大,镁胁迫下,出苗后70d清除花生植株体内活性氧的关键酶是SOD和CAT。
A culture experiment which taking Huayu33 as test material was conducted to investi-gate different Mg application Amount on membrane lipid peroxidation and activities of protective en-zymes of peanut.The results indicated that malondialdehyde （MDA） and proline （Pro） significantly rose under the stress of Mg deficiency, the produced active oxygen leaded to a temporary increase of superoxide dismutase （SOD） and catalase （CAT） activities.The content of MDA was decreased and the activity of SOD, POD,CAT was improved with reasonable application of Mg, that could improve capacity and physiological activity of peanut leaves and retard the senescence.The activity of POD changed slightly under different Mg applications.SOD and CAT were the dominant enzymes that clean active oxygen after 70 days of emergence.
出处
《花生学报》
2014年第2期7-11,共5页
Journal of Peanut Science
基金
国家花生产业技术体系CARS-14(土壤肥料)项目
关键词
花生
镁
抗氧化酶
peanut
magnesium
antioxidant enzyme
作者简介
彭云（1989-），女，山东沂水人，沈阳农业大学硕士研究生，从事花生营养与施肥研究。
通讯作者：韩晓日（1960-），男，教授，博士生导师，主要从事植物营养与施肥研究。E-mail：hanxiaori@163．com
