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当前位置: 首页 > 文章 > 弱光亚适温对不同黄瓜品种幼苗生长及光合作用的影响 山东农业大学学报(自然科学版) 2007,38 (4) 63-67
Position: Home > Articles > EFFECTS OF LOW LIGHT INTENSITY AND SUBOPTIMAL TEMPERATURE ON GROWTH AND PHOTOSYNTHESIS IN SEEDLINGS OF DIFFERENT CUCUMBER VARIETIES Journal of Shandong Agricultural University(Natural Science Edition) 2007,38 (4) 63-67

弱光亚适温对不同黄瓜品种幼苗生长及光合作用的影响

作  者：
梁文娟;孙晓琦;艾希珍
单  位：
山东农业大学园艺科学与工程学院
关键词：
黄瓜;弱光;亚适温;光合作用
摘  要：
以欧洲品种‘萨瑞格’、我国华南型品种‘翠绿’和华北型品种‘津优3号’为试材,研究弱光亚适温对黄瓜幼苗生长和光合作用的影响。结果表明,处理前‘萨瑞格’的叶面积最大,‘翠绿’最小;而干物重则以‘津优3号’最大,‘萨瑞格’其次,‘翠绿’最小。经9d弱光亚适温处理后,幼苗叶面积和干物重均以‘津优3号’最大,‘翠绿’最小。弱光亚适温胁迫可使黄瓜幼苗的Pn和CE明显降低,ΦPSⅡ有所下降,但Fv/Fm没有显著变化。Chl a、Chl b含量增加,Chl a/b比值减小。不同品种相比,处理前后均以‘津优3号’的Pn和CE最高,‘萨瑞格’最低;处理前的ΦPSⅡ以‘萨瑞格’最高,‘津优3号’最低,处理后‘萨瑞格’的较明显降低,而‘津优3号’和‘翠绿’变化不大。这一结果表明,‘津优3号’对弱光亚适温逆境的适应能力高于‘萨瑞格’和‘翠绿’,保持较高的光能转换效率和碳同化酶活性是其适应性增强的重要基础。
译  名：
EFFECTS OF LOW LIGHT INTENSITY AND SUBOPTIMAL TEMPERATURE ON GROWTH AND PHOTOSYNTHESIS IN SEEDLINGS OF DIFFERENT CUCUMBER VARIETIES
作  者：
LIANG Wen-juan,SUN Xiao-qi,AI Xi-zhen(Horticultural Science and Engineering College,Shandong Agricultural University,Taian 271018,china)
关键词：
Cucumber;Low light intensity;Suboptimal temperature;Photosynthesis
摘  要：
Effects of low light intensity and suboptimal temperature on growth and photosynthesis of cucumber seedlings were studied with 'SARIG HA-454'(Europe variety),'Cuiliü'(South China variety) and 'Jinyou 3'(Nouth China variety) as materials.The result showed that SARIG HA-454' had the largest leaf area,'Cuiliu' had the least one before treatment.However,the dry mater of 'Jinyou No.3' was more than those of 'SARIG HA-454' and 'Cuili '.During 9d low light intensity and suboptimal temperature stress,'Jinyou 3' showed the largest,and 'Cuili ' was the least in leaf area and dry mater.The photosynthetic rate(Pn),carboxylation efficiency(CE) and actual photochemical efficiency of PSII(ΦPSⅡ) of the experimental varieties decreased evidently,but no significant changes in maximum photochemical efficiency of PSII(Fv/Fm) had been observed.Although chlorophyll content increased,lower the ratio of Chl a/b.Comparison among different varieties,the Pn and CE of 'Jinyou 3' were the highest,while those of 'SARIG HA-454'were the lowest.Before imposed in stress condition,'SARIG HA-454' was the highest and 'Jinyou 3' was lowest in ΦPSⅡ,however,that of 'SARIG HA-454' decreased,'Jinyou 3' and 'Cuiliü'changed little after stress.Results of the study suggested that the adaptability of 'Jinyou No.3' to low light intensity and suboptimal temperature was higher than that of 'SARIG HA454' and 'Cuiliü'.It was the important basis that keeping higher efficiency for solar energy conversion and activity of carbon assimilation enzymes on developing adaptability to low light intensity and suboptimal temperature.

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