Physiological and Biochemical Characteristic of a Stripe Mutant with Abnormal Flower Organs in Rice  

水稻条斑和颖花异常双突变体的生理生化特性检测

作　　者：陈德西[1,2] 马炳田[1] 王玉平[1] 马玉清[1] 李仕贵[1] 

机构地区：[1]四川农业大学水稻研究所,四川温江611130 [2]四川省农业科学院植保所,四川成都610066

出　　处：《Agricultural Science & Technology》2009年第4期15-18,共4页农业科学与技术（英文版）

基　　金：Supported by Program for New Century Excellent Talents in University(NCET-04-0907);the Innovative Research Team in University (IRT0453)~~

摘　　要：[Objective] The experiment aimed to explore physiological and biochemical changes of leaves after plants were mutated. [Method] A rice double mutant with stripes on stems, leaves and spikelets were taken as experimental materials to study the enzyme activity changes in different growth stages and amino acid variation in rice. [ Result] The SOD activity in mutant was higher than that in wild plant at tillering metaphase, but lower than that in wild type before heading stage and late flowering; the POD activity in three stages increased firstly then declined and the activity showed highest maximal activity at before heading stage. However, the POD activity in wild type showed the opposite change trend; the CAT activity presented degression at three stages, especially high at tillering metaphase, but reverse changes in wild type; the MDA activity decreased at three stages, but it was still higher than that in wild type, besides, the soluble sugar content of mutant was lower, but total amino acid content was increased. [ Conclusion] The expression of mutant characteristics was correlated with SOD, POD, CAT and MDA activity Changes and these changes made the mutant survive and rice quality change at last.笔者在转基因过程中发现1个条斑和颖花异常水稻双突变体，该突变体一些叶片细胞结构发生改变，叶绿素含量较野生型的减少，光合作用降低。为探究突变体叶片的生理生化变化以及对米质的影响，笔者就突变体生理生化进行研究，以期更清楚地了解突变体的突变机制，为进一步研究和利用该突变性状提供依据。

关 键 词：RICE STRIPE Physiological and Biochemical Characteristic Rice quality 

分 类 号：S511[农业科学—作物学] TS255.3[轻工技术与工程—农产品加工及贮藏工程]