两优培九及其父本扬稻6号抽穗后叶片与根系衰老特点的研究  

Study on leaf and root senescence of Liangyoupeijiu and it's male parent Yangdao 6 after heading

作　　者：薛艳凤[1] 郎有忠[1] 吕川根[2] 张洪熙[3] 朱庆森[1] 杨建昌[1] 邹江石[2] 

机构地区：[1]扬州大学江苏省作物遗传生理重点实验室,江苏扬州225009 [2]江苏省农业科学院粮食作物研究所,江苏南京210014 [3]江苏里下河地区农业科学研究所,江苏扬州225007

出　　处：《扬州大学学报（农业与生命科学版）》2008年第3期7-11,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家高技术研究发展计划项目(863-2003AA212040)

摘　　要：水培条件下,研究两优培九及其父本扬稻6号与对照汕优63及武运粳8号结实期叶面积消减率、叶绿素含量、叶片的SOD活性及MDA含量和根系氧化力、颖花根活量、SOD活性及MDA含量等生理活性指标的变化。结果表明,两优培九与扬稻6号、武运粳8号相比,绝大多数指标的变化呈现早衰倾向;两优培九叶片的早衰现象先于根系,根衰不是造成叶片早衰的主要原因;两优培九结实前期诸活性指标变幅大于扬稻6号,除叶片MDA含量外,结实中后期活性均较扬稻6号低;两优培九、汕优63结实中后期叶、根诸活性指标总体均低于扬稻6号、武运粳8号,但产量均高于两者。Data analyses on leaf area,chlorophyll content,SOD activity and MDA content in leaf,and oxidizing ability,spikelet-root-activity,SOD activity and MDA content in root of Liangyoupeijiu,Yangdao 6 and comparative varieties Shanyou 63,Wuyujing 8（control） during grain filling stage was carried out.It was indicated that,Liangyoupeijiu had a tendency of early senescence.Leaf senescence of Liangyoupeijiu was not caused by root senescence.The fluctuation of above physiological data activity indices for Liangyoupeijiu were larger than Yangdao 6 in early grain filling stage,and smaller in late stage（except for MDA content in leaf）.Although both physiological activity of leaf and root were lower than Yangdao 6 and Wuyunjing 8 in medium and later filling stages,Liangyoupeiju and Shanyou 63 showed higher yields than the controls.

关 键 词：水稻 根系 叶片 生理特性 衰老 

分 类 号：S511.048[农业科学—作物学]