遮荫条件下紫心甘薯的抗氧化防御系统研究  

Research on Antioxidant Defense System of Purple Sweet Potato under Shading Conditions

作　　者：侯夫云[1] 董顺旭[1] 张海燕[1] 李爱贤[1] 解备涛[1] 张立明[1] 王庆美[1] 

机构地区：[1]山东省农业科学院作物研究所,山东济南250100

出　　处：《山东农业科学》2013年第6期48-50,共3页Shandong Agricultural Sciences

基　　金：国家甘薯产业技术体系项目"种薯繁育岗位"(cars-11-b-06);国家科技支撑计划项目(2009BADA7B03);山东省良种工程项目(鲁农良种2009-5);"863"计划项目(2012AA101204)

摘　　要：研究了遮荫条件下两个紫心甘薯品种叶片的抗氧化防御系统多种重要保护酶的变化。结果显示,遮荫20天,两种甘薯的叶片SOD、CAT活性均下降,POD活性、MDA含量均增加;长期弱光胁迫下,济薯18叶片SOD和CAT活性上升,POD活性下降,而品种Ayamuraski叶片的SOD、CAT、POD活性均上升。在遮荫胁迫下,紫心甘薯的SOD、CAT在抗氧化防御系统中显示出重要作用。The changes of some important protective enzymes in antioxidant defense system in purple sweet potato leaves were studied under shading conditions. The results showed that the SOD and CAT activities of leaves decreased, but the POD activity and MDA content increased in the 2 sweet potato cultivars after shading for 20 days. Under long- time shading, SOD and CAT activities all increased, POD activity reduced in Jishul8 ; while SOD, CAT and POD activities increased in Ayamuraski. Therefore, SOD and CAT had important functions in antioxditation defense under shading conditions.

关 键 词：遮荫 紫心甘薯 抗氧化防御系统 

分 类 号：S531.01[农业科学—作物学]