干旱胁迫与复水对玉米苗期渗透调节物质及抗氧化酶的影响  

Effects of Drought Stress and Water Recovering on Osmotic Regulation Substances and Antioxidant Enzymes of Corn Seedlings

作　　者：刘志芳[1,2] 张春梅[1,2] 闫治斌 秦嘉海[1,2] 

机构地区：[1]河西学院农业与生物技术学院,甘肃张掖734000 [2]甘肃高校河西走廊特色资源利用省级重点实验室,甘肃张掖734000 [3]甘肃省敦煌种业股份有限公司,甘肃酒泉735000

出　　处：《甘肃农业科技》2014年第1期3-6,共4页Gansu Agricultural Science and Technology

基　　金：国家科技部"十二五"支撑计划项目"玉米;棉花;油菜新品种规模化制种基地建设"(2011BAD35B10);甘肃省高校河西走廊特色资源利用省级重点实验室项目(XZ1002);甘肃省高等学校2010年研究生导师科研项目(1009B-05)资助

摘　　要：以掖单13号(抗旱性弱)和农大108(抗旱性强)为试材,采用盆栽控水的方法,研究了不同程度的干旱胁迫与复水条件对玉米苗期渗透调节物质及抗氧化酶的影响。结果表明,玉米苗期可溶性糖、蛋白质和脯氨酸的积累与品种的抗旱性呈负相关,抗旱性与水分胁迫下抗氧化酶类活性呈显著负相关,其中SOD和POD为主要抗氧化酶。In the present paper we studied the effects of different degrees drought stress and water recovering on osmotic regulation substances and antioxidant enzymes by using cultivars, Yedan 13 and Nongda 108 as test materials, The results showed that there was a negative correlation between soluble sugar, protein, accumulation of proline and drought resistance. Moreover, there was a negative correlation between drought resistance and antioxidant enzymes. In addition, the main antioxidant enzyme are superoxide dismutase（SOD） and peroxidase（POD） in corn seedlinz staze under drought stress and water recovering conditions.

关 键 词：玉米 干旱 复水 抗氧化酶 渗透调节物 

分 类 号：S513[农业科学—作物学]