日光温室不同季节的弱光环境对番茄光合作用的影响  

Influence of Low Light Intensity Environment on Photosynthesis of Tomato in Solar-greenhouse During Different Seasons

作　　者：黄伟[1] 张俊花[1] 任华中[2] 

机构地区：[1]河北北方学院园艺系,河北张家口075000 [2]中国农业大学园艺学院,北京100094

出　　处：《河北北方学院学报（自然科学版）》2005年第1期53-57,共5页Journal of Hebei North University:Natural Science Edition

基　　金：国家自然科学基金重点资助项目 (39830230)

摘　　要：不同季节日光温室内的生态环境差异很大. 通过遮光处理比较不同番茄品种功能叶片叶绿素含量、净光合速率及叶绿素荧光参数等的变化. 试验结果表明: 遮光处理导致功能叶片叶绿素含量增加及PSⅡ光化学活性提高, 但净光合速率降低; 碳同化活性也降低. 不同番茄品种对弱光逆境的适应性差异明显.The ecologic environment in solar-greenhouse varied much in different seasons.Effects of shading on chlorophyll content,photosynthetic rate and chlorophyll fluorescence parameters with different ecotype tomato varieties in solar-greenhouse were studied in this paper.The results showed that the chlorophyll contents and PSⅡactivity increased apparently under shading,but net photosynthetic rate and CO_ 2 assimilation efficiency decreased.The tolerance to low light stress among different tomato varieties was much different.

关 键 词：光合作用 日光温室 叶片叶绿素含量 光环境 叶绿素荧光参数 净光合速率 季节 番茄品种 遮光处理 光化学活性 环境差异 试验结果 弱光逆境 PSⅡ 适应性 碳同化 

分 类 号：S642.2[农业科学—蔬菜学] Q945.11[农业科学—园艺学]