夏季干旱对桔梗叶绿素荧光动态的影响  

Study on Fluorescence Characteristics Variation of Platycodon grandiflorus Leaves in Summer Drought

作　　者：陈兰兰[1] 郭圣茂[1] 姚春娟[1] 赖晓莲[1] 吴佳敏[1] 熊光康 

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045

出　　处：《北方园艺》2015年第13期81-84,共4页Northern Horticulture

基　　金：中央财政林业科技推广示范资金资助项目(JXTG[2013]11号)

摘　　要：以桔梗为试材,利用PAM-2500对其叶绿素荧光特性在夏季干旱条件下的动态变化进行了研究,探讨夏季干旱对桔梗叶绿素荧光动态的影响。结果表明:桔梗的荧光参数在夏季的3个月中变化趋势基本一致。叶片的部分Fv/Fm值低于正常水平,说明夏季干旱使桔梗受到了光抑制,导致其PSⅡ的原初光能转换效率受到抑制,直接影响了植物光合作用的电子传递。Taking Platycodon grandiflorus as material,the dynamic variation of chlorophyll fluorescence characteristics of Platycodon grandiflorus in summer by using PAM-2500 was studied. The results showed that fluorescence parameters of Platycodon grandiflorus had the same change trend in the three months of summer. Among them, parts of Fv/Fm values were lower than normal level,it showed that Platycodon grandiflorus were enduring photo inhibition in summer, primary energy conversion efficiency of the PSI was inhibited ,which directly affected the electron transfer.

关 键 词：桔梗 夏季 叶绿素荧光 动态变化 

分 类 号：Q949.95[生物学—植物学]