水稻三系紫叶标记不育系叶片衰老生理研究  

Studies on senescence physiology of leaves in rice genic male sterile lines with a purple-leaf marker

作　　者：邓国富[1] 戴高兴[2] 李杨瑞[1] 梁世荣[2] 周萌[2] 周维永[2] 高利军[2] 

机构地区：[1]广西农业科学院 [2]广西农业科学院水稻研究所,广西南宁530007

出　　处：《西南农业学报》2007年第6期1194-1197,共4页Southwest China Journal of Agricultural Sciences

基　　金：广西青年科学基金项目(桂科青0728)

摘　　要：以水稻三系紫叶标记不育系先红A和知红A为试验材料,测定其生育后期相关衰老生理指标。结果表明:紫叶标记不育系先红A和知红A在生育后期叶绿素含量、可溶性蛋白含量、光合速率和SOD活性维持较高水平,比对照博A和特A总体下降慢,而POD活性和MDA含量比博A和特A低,且总体上升幅度小,说明先红A和知红A在生育后期的整个阶段,倒一叶的活性氧产生量较少,清除酶活性较强,叶片仍能维持较强的光合能力,与对照博A和特A相比未出现早衰现象。先红A所配杂种F1结实正常,表现出较强的杂种优势,杂种间重要农艺形状和产量差异较大,大部分组合产量优于对照特优63。The corresponding physiological characteristics of senescence at the late growth stages were measured in Zhihong A and Xianhong A,a genie male sterile Indica rice with a purple-leaf marker. The results were as follows：compared with the the control Te A and Bo A,Zhihong A and Xianhong A appeared higher cements of chlorophyll, soluble protein, SOD activity and photosynthetic rate and thesed decreased slowly,while they had lower MDA content and POD activity and the two indexes increased at a low content. These indicated that there was less reactive oxygen species production,high activity of scavenging enzymes in the leaf of Zhihong A and Xianhong A and it still maintained more strong photosynthesis and senescenced slower than that of Te A and Bo A at the late growth stages. There were significant diversity in the major agronomic characters and yield between the hybrids producted with Xianhong A, but a majority of hybrids had higher yield than the control Teyou 63.

关 键 词：紫叶标记 不育系 衰老生理 早衰 

分 类 号：S511[农业科学—作物学]