两系籼型杂交水稻齐穗后光合作用和衰老特性的研究  

Characteristics of Photosynthesis and Senescence after Heading Stage in Two-Line Indica Hybrid Rice

作　　者：李奕松[1] 黄丕生[1] 黄仲青[2] 丁艳锋[1] 

机构地区：[1]南京农业大学农业部作物生长调控重点实验室,江苏南京210095 [2]安徽农业大学农学系,安徽合肥230036

出　　处：《中国水稻科学》2002年第2期141-145,共5页Chinese Journal of Rice Science

基　　金：安徽省"九五"攻关项目

摘　　要：对籼型两系与三系杂交水稻群体光合作用和衰老特性进行了比较 ,研究结果表明齐穗后剑叶叶绿素和可溶性蛋白质含量、超氧化物歧化酶活性、群体光合速率、脂质过氧化产物丙二醛含量、群体干物质生产量在组合间差异达极显著水平 ,两系和三系中各有指标值高低的组合 ;群体光合作用和衰老特性的差别主要在组合间 ,而不在两系和三系两种类型之间 ,两系杂交稻未有明显的优势。籼型两系杂交水稻的配组中应选配齐穗后叶片衰老慢、群体光合速率高的组合 ,提高抽穗至成熟期的物质生产量。A comparative study on the photosynthesis and senescence in two line and three line hybrid rice indicated that leaf senescence was associated with the decrease in superoxide dismutase activity and chlorophyll, soluble protein content, and the marked increase in malondialdehyde content. Significant differences were observed within the same kind of hybrid rice but not between the two kinds of hybrids, so did for the canopy photosynthetic rate of these hybrids. After heading stage, the canopy photosynthetic rate correlated positively with the dry matter production during ripening stage.

关 键 词：两系籼型杂交水稻 光合作用 衰老特性 超氧化物歧化酶 丙二醛 

分 类 号：S511.21[农业科学—作物学]