摘要
以七子花(Heptacodiummiconioides)为材料,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(Photosyntheticefficien cy)最大,呼吸速率(Respiratoryintensity)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。
The study deals with the changes of physiological characteristics (Photosynthetic, Exhaustion rate , Membrane permeability , Peroxidase activities, Catalase activities , Ascorbate peroxidase activities and root activities) 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 miconioides leaves are the highest , and membrane permeability (MP) of Heptacodium miconioides leaves is the lowest. The growth of Heptacodium miconioides 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 miconioides.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第1期103-107,共5页
Journal of East China Normal University(Natural Science)
基金
浙江省自然科学基金(39277)
关键词
七子花
PH
生理特性
Heptacodium miconioides
pH
physiological characteristics
