华东师范大学学报(自然科学版) ›› 2003, Vol. 2003 ›› Issue (1): 103-107.

• 论文 • 上一篇    

不同PH水平对七子花生理特性的影响

刘鹏； 徐根娣； 杨蔚蔚   

  1. 浙江师范大学 生命与环境科学学院， 浙江金华 321004
  • 收稿日期:2002-03-01 修回日期:2002-07-03 出版日期:2003-03-25 发布日期:2003-03-25

Effects of PH on Physiological Characteristics of Heptacodium miconides

LIU Peng; XU Gen-di; YANG Wei-wei   

  1. College of Life and Environment, Zhejiang Normal University, Zhejiang Jinhua 321004, China
  • Received:2002-03-01 Revised:2002-07-03 Online:2003-03-25 Published:2003-03-25

摘要： 以七子花（Heptacodium miconioides）蔚材料，设置不同的PH 水平，研究PH变化对七子花生理特性的影响。结果表明：七子花在PH为5.5值时，叶片的光合速率（Photosynthetic efficiency）最大，呼吸速率（Respiratory intensity）最强，根系的质膜透性（MP）最低，过氧化物酶（POD），过氧化氢酶（CAT），抗坏血酸过氧化物酶（AP）和根系活力（RA）的活性最高，表明该酸碱度较适宜七子花生长。PH偏低或偏高都不利于七子花的生长。

关键词: 七子花, PH, 生理特性, 七子花, PH, 生理特性

Abstract: The study deals with the changes of physiological characteristics(Photosynthetic, Exhaustion rate, Membrane permeability, Peroxidase activities, Ascorbate peroxidase actibities and root cativities) with different supplementation of PH of Heptacodium miconioides. There are 7 kinds of PH treatments (3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5)in our experiment. The results indicated that under PH 5.5 treatment,photosynthetic efficiency (Pn),respiratory intensity (Er), root activities (RA) and the activities of peroxidase (POD)、catalase(CAT)、ascorbate peroxidase (AP) of Heptacodium miconides leaves are the highest, and membrane permeability (MP) of Heptacodium miconioides leaves are the lowest. The growth of Heptacodium miconides is more favorable under PH 5.5 treatment. When PH of water medium is lower or higher than PH 5.5 ,it is disadvantageous to the growth of Heptacodium miconides.

Key words: PH, physiological characteristics, Heptacodium miconides, PH, physiological characteristics