Effects of epiphyte on the growth and physiology of Myriophyllum Spicatum

In order to further understand the implantation effect of epiphyte on submerged plants,simulated experiment of Myriophyllum Spicatum was carried out. The paper studied the changes of root length,plant length,biomass,soluble protein content,chlorophyll content,MDA content,SOD,POD and CAT. The experimental results showed that the biomass of Myriophyllum Spicatum in the treatment without epiphyte increased by 2. 49 times,and at the end of the experiment,the chlorophyll content increased by 1. 87 times. This showed that a large number of breeding epiphyte would affect the synthesis of biomass and decrease chlorophyll content. Enzyme activity of POD and CAT with epiphyte in treatment was higher than the treatment without epiphyte,and MDA content rose substantially at the end of the experiment. It was concluded that a large number of epiphyte damaged cell membrane,affected the antioxidant protective enzyme,and eventually led to significant decline of Myriophyllum Spicatum. Epiphyte is one of the main reasons for decline of submerged plants.