南京林业大学学报(自然科学版) ›› 2008, Vol. 32 ›› Issue (06): 119-122.doi: 10.3969/j.jssn.1000-2006.2008.06.027

• 研究论文 • 上一篇    下一篇

干旱胁迫对几种楸树苗木叶片荧光特性的影响

王良桂,张春霞,彭方仁*,岑显超,杜旭华   

  1. 南京林业大学森林资源与环境学院,江苏 南京 210037
  • 出版日期:2008-12-18 发布日期:2008-12-18

Effects of drought stress on the fluorescence characteristics of four type of Catalpa spp.

WANG Liang-gui, ZHANG Chun-xia, PENG Fang-ren* , CEN Xian-chao, DU Xu-hua   

  1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
  • Online:2008-12-18 Published:2008-12-18

摘要: <正>

Abstract: The chlorophyll fluorescence parameters, e.g. Fr/Fm Fr/Fm, φPSⅡ, qp, NPQ, ETR, for four type of Catalpa spp. were determined and analysed using chlorophyll fluorescence kinetics technology under drought stress. The results showed that the Fr/Fm and qp had the trend of decrease--increase --decrease with the increase of drought stress. It indicated that photoinhibition took place at the first stage of drought stress, then the tree adjusted itself and the reaction center began to open and reduce the photoinhibition. An the end, the photoinhibition began to increase. The results of Fr/Fm、NPQ,ETR,φPSⅡ increase in the early, and reduce in the later. The results showed that the tree could adapt the adversity and the plant had protection mechanism. There were great different of the capability to react to drought stress for four type of Catalpa. According to Fr/Fm, the ability of drought resistance of four type of Catalpa spp. was ’Nanyang’ ,’Jinsi’ , ’Yuanjichangguo’, Catalpa bungei.

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