高温胁迫对水稻可溶性糖及膜保护酶的影响研究  

Effects of High Temperature Stress on Soluble Sugar and Membrane Protective Enzyme of Rice

作　　者：刘媛媛[1] 滕中华[1] 王三根[1] 何光华[1] 

机构地区：[1]西南大学农学与生物科技学院,重庆400716

出　　处：《西南大学学报（自然科学版）》2008年第2期59-63,共5页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市水稻玉米良种创新重大专项资助项目(CSTC;2007AB1033CSTC;2007AA1019);重庆市攻关资助项目(CSTC;2007AC1051)

摘　　要：以水稻K30为材料,探讨高温胁迫对抽穗灌浆结实期的水稻超氧化物歧化酶(SOD),过氧化物酶(POD),丙二醛(MDA)及可溶性糖含量的影响.结果表明:高温使水稻剑叶中POD、SOD活性降低,同时光合产物可溶性糖含量也下降;而MDA含量明显提高.讨论了高温对水稻的热伤害机理,为防御水稻的高温危害及抗性育种提供参考.The effects of high temperature stress on the activity of superoxide dismutase （SOD） and peroxidase （POD） and the contents of malondialdehyde （MDA） and soluble sugar in rice variety K30 were studled. The results showed that high temperature stress lowered the activity of SOD and POD and the content of soluble sugar and significantly enhanced MDA content in the flag leaves. The physiological mechanism for the injury caused by high temperature stress is discussed.

关 键 词：水稻 高温 超氧化物歧化酶(SOD) 过氧化物酶(POD) 丙二醛(MDA) 可溶性糖 

分 类 号：S511[农业科学—作物学]