北方粳型超级稻灌浆结实期碳水化合物含量和保护酶活性的变化  

Changes in Carbohydrate Content and Protective Enzyme Activity of Japonica Type Super Rice During Grain-Filling Stage in North China

作　　者：许明[1] 贾德涛[1,2] 马殿荣[1] 苗微[1] 王楠[1,3] 陈温福[1] 

机构地区：[1]沈阳农业大学水稻研究所/农业部北方作物生理生态重点开放实验室/教育部与辽宁省共建北方粳稻遗传育种重点实验室,辽宁沈阳110161 [2]辽宁省铁岭市农业科学院,辽宁铁岭112616 [3]辽宁省铁岭市农业技术培训学校,辽宁铁岭112616

出　　处：《中国水稻科学》2011年第1期59-64,共6页Chinese Journal of Rice Science

基　　金：国家科技支撑计划资助项目(2006BAD01A01-6);国家公益性行业(农业)科研专项经费资助项目(nyhyzx07-001);辽宁省教育厅重点实验室资助项目(LS2010143)

摘　　要：以北方粳型超级稻品种沈农265和沈农606为试材,以秋光和辽粳294为对照,采用盆栽试验方法,研究了粳稻灌浆结实期碳水化合物和保护酶活性的变化。结果表明,沈农265和沈农606比对照品种具有显著的产量优势。通过对灌浆结实期的籽粒和叶片碳水化合物的测定,发现沈农265叶片中果糖、葡萄糖、蔗糖含量在花后10 d和花后40 d显著高于对照品种秋光,花后40 d沈农265的籽粒淀粉含量显著高于秋光;而沈农606与对照品种辽粳294叶片和籽粒的碳水化合物含量没有显著差异。根系和叶片保护酶的测定结果表明,超级粳稻的根系衰老要早于地上部分,与同期对照品种相比,沈农265和沈农606叶片和根系丙二醛含量较低,超氧化物歧化酶活性和过氧化物酶活性较高,延缓了植株衰老。The carbohydrate and malondialdehyde contents and protective enzyme activities in grains and leaves of rice during grain-filling stage were investigated in a pot experiment with typical japonica super rice varieties,Shennong 265 and Shennong 606 as materials and Akihikari and Liaojing 294 as control.The results showed that Shennong 265 and Shennong 606 had significant advantage in yield.Glucose,fructose and sucrose contents in leaves of Shennong 265 were significantly higher than the control Akihikari at 20 days and 40 days after flowering.At 40 days after flowering,starch content in grains of Shennong 265 was also significantly higher than that of the control Akihikari.Shennong 606 showed no significant difference compared with the control Liaojing 294 in carbohydrate contents in grains and leaves during grain-filling stage.Roots displayed early senescence in contrast to aerial parts,which was indicated by earlier peak of protective enzyme activity in roots than in leaves of japonica type super rice.Shennong 265 and Shennong 606 showed delayed senescence because their leaves and roots had low malondialdehyde content,high superoxidase dismutase activity and peroxidase activity compared with the control varieties.

关 键 词：粳型超级稻 碳水化合物含量 保护酶活性 丙二醛含量 

分 类 号：S511.22[农业科学—作物学]