荷花不同部位浸出液对3种淡水藻类生长的影响

文章探讨了荷花不同部位(茎和叶)浸出液对铜绿微囊藻、蛋白核小球藻及四尾栅藻生长的影响,为利用荷花化感物质减少湖泊富营养化提供基础。结果表明荷花不同部位的浸出液对3种藻类均有抑制作用,荷花叶浸出液抑制效果好于荷花茎浸出液。荷花不同部位浸出液对藻类的半浓度效应(EC5)0各不相同,荷花叶浸出液对四尾栅藻的EC50为4.21 g/L,抑制效果最好;铜绿微囊藻及蛋白核小球藻的EC50值分别为5.35 g/L、9.92 g/L;荷花茎浸出液对铜绿微囊藻、蛋白核小球藻及四尾栅藻的EC50值分别为9.52 g/L、7.28 g/L、6.90 g/L。

Effect of Leachate from Different Parts of Nelumbo nucifera on the Growth of Three Freshwater Algae

Effects of leachate from different parts of Nelumbo nucifera on the growth of Microcystis aeruginosa,Chlorella pyrenoides,Scenedesmus quadricanda were discussed to provide a basis for the allelopathic substances from lotus to reduce lake eutrophication.Results showed that the leachate from different parts of Nelumbo nucifera significantly inhibited the growth of three algae.The lotus leaf had a better inhibitory effect than Nelumbo nucifera stem.The leachate from different parts of Nelumbo nucifera had different effects of half-concentration(EC50) of different algae.EC50 of Microcystis aeruginosa,Chlorella pyrenoides,Scenedesmus quadricanda was 4.21,5.35,9.92 g/L respectively.The leachate from Nelumbo nucifera stem on Microcystis aeruginosa,Chlorella pyrenoides,Scenedesmus quadricanda was 9.52,7.28,6.90 g/L respectively.