葫芦枣树叶抗氧化性物质的动态研究  

Dynamic Changes of the Antioxidant Substances in Leaf of Ziziphus jujuba Mill. var. jujuba f. lageniformis (Nakai) Kitag.

作　　者：刘世鹏[1] 曹娟云[1] 刘昌欣[1] 陈宗礼[1] 

机构地区：[1]延安大学生命科学学院,陕西省区域生物资源保育与利用工程技术研究中心,陕西省红枣重点实验室(延安大学),陕西延安716000

出　　处：《湖南农业科学》2012年第9期110-113,共4页Hunan Agricultural Sciences

基　　金：陕西省自然科学基金(S2009JC970);陕西省教育厅重点实验室专项(2010JS064);延安市自然科学基础研究计划(2009KN-25)

摘　　要：通过测量葫芦枣树叶在不同发育时期抗氧化性物质活性的动态变化,研究紫外辐射、降水量等环境因素的月际性差异与葫芦枣树叶的抗氧化性物质——超氧化物歧化酶(SOD)和过氧化物酶(POD)活性的相关性。结果表明:4～5月枣树处于生长初期时,UV-B辐射强度小,降水量、平均气温、日照时数等环境条件适中,SOD、POD的活性较弱;6～7月枣树进入生长旺盛期和开花期,虽降水量相对较大,但因UV-B辐射等其他环境因素胁迫,SOD、POD的活性也随之增强;8～10月枣树进入成熟期与休眠期,降水逐渐减少,UV-B辐射等其他环境胁迫因素也在减弱,枣树体内SOD、POD的活性下降。Through determining the dynamic changes of antioxidant substances in leaf of Ziziphus jujuba Mill. var. jujuba f. lageniformis （Nakai） Kitag at different growth periods, the correlation between inter-monthly difference of environment factors （UV radiation, precipitation, etc.） and activities of antioxidant substances （SOD and POD） in leaf of Ziziphus jujuba Mill. var. jujuba f. lageniformis （Nakai） Kitag was studied. The results showed that the activities of SOD and POD were weaker when the Ziziphus jujuba Mill. var. jujuba f. lageniformis （Nakai） Kitag in the primary growth period （April-May） as the UV-B radiation is intensity, and the precipitation, average temperature, sunshine hours, and other environmental conditions are moderate; step into vigorous-growth and flowering period （June, July）, the activities of SOD and POD increased with increasing precipitation though there were some other environment stresses （such as UV-B radiation）; step into mature and rest period （from August to October）, the precipitation decreased gradually, and the other environment stresses （UV-B radiation, etc.） also reduced, the activities of SOD and POD in plant decreased.

关 键 词：葫芦枣树 抗氧化性物质 动态变化 

分 类 号：S665.1[农业科学—果树学]