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。
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.
点击查看大图
下载: