华南205木薯及其同源四倍体PSⅡ叶绿素荧光参数差异分析  

Analysis on Chlorophyll Fluorescence Parameters of PhotosystemⅡ in Cassava Diploid and its Autotetraploid

作　　者：宋红艳 张振文[2] 安飞飞[2] 陈霆[2] 李开绵[2] 

机构地区：[1]海南大学农学院,海南海口570228 [2]中国热带农业科学院热带作物品种资源研究所农业部木薯种质资源保护与利用重点实验室海南儋州,571737

出　　处：《热带作物学报》2014年第12期2410-2413,共4页Chinese Journal of Tropical Crops

基　　金：国家自然科学基金面上项目(No.31371684);国家自然科学基金面上项目(No.31271776);国家“973”计划项目(No.2010CB126606)

摘　　要：为研究华南205二倍体木薯及其同源四倍体叶片中光系统Ⅱ(PSⅡ)叶绿素荧光参数的差异,采用调制式叶绿素荧光成像系统Imaging-Pam对PSⅡ的叶绿素荧光参数进行测定。结果表明:SC205染色体加倍后,叶绿素a、叶绿素b及总叶绿素含量均显著提高;叶绿素荧光参数Fo、ΦPSⅡ、q P和ETR均显著升高,NPQ降低,Fv/Fm并未发生显著变化。叶绿素含量及ΦPSⅡ、q P、ETR的上升表明SC205四倍体叶片PSII反应中心捕光能力强、光化学转化效率高,从而提高了叶片的光合速率。In order to study the chlorophyll fluorescence parameters difference between South China 205 and its tetraploid,modulated chlorophyll fluorescence imaging system Imaging-Pare was used to measure the chlorophyll fluorescence parameters.The results showed that：chlorophyll a,chlorophyll b and total chlorophyll in tetraploid were significantly increased,also the fluorescence parameters including Fo,ΦPSⅡ,qP and ETR,while NPQ was significantly decreased,FJFm was not significantly changed.Chlorophyll content and ΦPS Ⅱ,qP and ETR were increased significantly,indicating that light-harvesting ability and photochemical conversion rate in PSII reaction center of tetraploid leaves were higher than that of SC205 and the photosynthesis efficiency of the tetraploidy was improved.

关 键 词：木薯 同源四倍体 叶绿素荧光参数 

分 类 号：S533[农业科学—作物学]