渔业科学进展2012，Vol.33Issue(3)：83-87,5.
GeO2对海带幼孢子体培育过程中硅藻污染的抑制效应
Suppressive effect of germanium dioxide on diatom contamination during cultivation of Saccharina japonica young sporophytes
摘要
Abstract
In the present study,using the chlorophyll fluorescence technique,the suppressive effect of germanium dioxide (GeO2)on Nitzschia sp,contamination during the cultivation of Saccharina japonica seedling was investigated with the photosystem II maximum fluorescence yield (Fv/Fm) as the index.The results showed that; 1) When the concentration was above 5mg/L,GeC2 affected Fv/Fm value of Nitzschia sp.significantly,whereas when the concentration was 15mg/L or above,GeO2 had lethal effect on Nitzschia sp.; 2) To the young sporophytes of S.japonica,GeO2 at concentrations of 20mg/L or above affected the Fv/Fm value significantly,whereas GeO2 at concentrations of 30mg/L or above had lethal effect on young sporophytes; 3) To the young sporophytes contaminated by Nitzschia sp.,the Fv/Fm value was affected significantly by GeO2 at concentrations of 15 mg/L or above,while the contaminated young sporophytes died when GeO2 concentration was 20 mg/L or above.Comparatively,GeO2 at concentrations of 5~15 mg/L could suppress the photosynthesis of Nitzschia sp.significantly,but only had a minor effect on photosynthesis of S.japonica young sporophytes.Therefore,GeO2 at concentrations of 5~15 mg/L could prevent the Nitzschia sp.contamination during the cultivation of S.japonica young sporophytes.The results obtained from the present study could provide the basis for preventing the Nitzschia sp.contamination during the cultivation of S.japonica young sporophytes.关键词
GeO2/海带幼孢子体/菱形藻/叶绿素荧光技术Key words
Germanium dioxide /Saccharina japonica sporophytes /Nitzschia sp./Chlorophyll fluorescence technique分类
农业科技引用本文复制引用
李涛,王飞久,孙修涛,汪文俊,刘福利,丁昌玲,梁洲瑞,刘坤..GeO2对海带幼孢子体培育过程中硅藻污染的抑制效应[J].渔业科学进展,2012,33(3):83-87,5.基金项目
国家"863"项目(2012AA10A406)和海带行业专项(B22201002)共同资助 （2012AA10A406）
