不同茶树品种(系)叶绿素荧光参数季节性差异研究  

Research on Seasonal Variations of Chlorophyll Fluorescence Parameter of Different Tea Cultivars( Lines)

作　　者：唐敏[1] 翟秀明[1] 姚永红[1] 侯渝嘉[1] 邬秀宏[1] 黄尚俊[1] 

机构地区：[1]重庆市农业科学院茶业研究所,重庆永川402160

出　　处：《西南农业学报》2015年第1期79-83,共5页Southwest China Journal of Agricultural Sciences

基　　金：重庆市科技攻关计划项目"优质茶树新品种选育与示范";重庆市基础与前沿研究项目"茶树光响应与适应机制研究";重庆市基本科研业务费项目"干旱胁迫对茶树叶绿素荧光参数的影响"

摘　　要：采用PAM-2500便携式调制叶绿素荧光仪测定了5个茶树品种(系)春、夏、秋3季的叶绿素荧光参数,分析比较了各参数的季节性差异和品种间差异。结果显示,茶树能通过自身调节机制改变能量耗散中Y(NPQ)和Y(NO)的比例,以适应夏秋季伏旱天气的影响,但不同品种适应能力不尽相同。供试5个品种(系)中,0311、0305两个品系的PSII电子传递速率快,光化学反应启动速率快,最小饱和光强大,表现出较高的光能利用率,具有较高潜在生物产量的生理基础和较强的适应性。The chlorophy II fluorescence parameters of leaves of 5 tea-plant cultivars（ lines） were measured by the portable modulated chlorophyll fluorometer（ PAM-2500） in spring,summer and autumn,and the differences of the parameters between seasons or inter-cultivars（ lines） were analyzed then. The results showed that tea-plant could change the proportion of Y（ NPQ） and Y（ NO） by the self-regulation mechanism to adapt the climate change,but the adaptability was different among different cultivars（ lines）. The 0311 and 0305 behaved the best in the 5 tested cultivars（ lines）,their electron transport rate of PSII,start speed of photochemical reaction and minimum saturation intensity were maintained a high level. And the results also indicated that the 0311 and 0305 could have strong light energy utilization efficiency,big potential physiological and biochemical foundations to obtain high biomass and a high adaptability to the climate.

关 键 词：茶树 季节性 电子传递速率 最小饱和光强 

分 类 号：S571.1[农业科学—茶叶生产加工]