Allelopathic Effects of Three Submerged Macrophytes on Five Eutrophic Algae

Allelopathic effects of three submerged macrophytes,Myriophyllum spicatum,Potamogeton malaianus,Vallasneria asiatica on five eutrophic algae Chlamy domonas sajao,Microcystis aerugnasa,Phormidium tenue,Scenedesmus quaclricauda and Chlorella pyrenoidosa were investigated.The results indicated that,(1)The culture solution of Potamogeton malaianus inhibited the growth of Microcystis aeruginosa,Chlamy domonas sajao,Scenedesmus quaclricauda and Chlorella pyrenoidosa,and had no effect on Phormidium tenue;(2) The culture solution of Vallasneria asiatica inhibited the growth of Chlamy domonas sajao,Phormidium tenue and Chlorella pyrenoidos,accelerated the growth of Scenedesmus quaclricauda and had no effect on Microcystis aeruginosa;(3) The culture solution of Myriophyllum spicatum inhibited the growth of Chlamy domonas sajao and Chlorella pyrenoidos,accelerated the growth of Microcystis aeruginosa,and had no effect on Phormidium tenue and Scenedesmus quaclricauda.