云南省马铃薯银腐病(Helminthosporiumsolani)的研究OCCURRENCE OF SILVER SCURF DISEASE CAUSED BY HELMINTHOSPORIUM SOLANI (DURIEU & MONT.,) IN YUNNAN PROVINCE
K.Y.Ryu,罗文富,杨艳丽,陈海如,郭华春,王毅
摘要(Abstract)：
20 0 1年我们从云南省薯产区市场上和仓库内采集到马铃薯银腐病标本 ,研究表明 ,该病冬季发病率达 33. 3%。受感染部位多分布于薯块的茎基端 ,重病薯块因失水过多 ,块茎皱缩。病菌生长后期变为棕色。分生孢子梗无分枝 ,大小为 15 0～ 5 5 0× 7 0～ 10 0 μm (平均 35 0× 8 5 μm ) ,1～ 6根成簇着生于球形基部。分生孢子棕色 ,单个或成簇地自分生孢子梗基端往上呈轮状排列 ,直或稍弯 ,顶端小 ,略呈锥形 ,有 3～ 8个横隔 ,大小为 2 0～ 80 μm× 7 5～ 10 μm (平均 5 0× 8 5 μm )。根据该病病原真菌的形态学和培养性状 ,鉴定为茄长蠕孢 (Helminthosporiumsolani)。黑暗和光照下培养 ,分生孢的萌发率无明显差异。通过人工接种于薯块表面 ,表现出较强的致病性 ,马铃薯银腐病在中国属首次报道
关键词(KeyWords)： 马铃薯;银腐病;Helminthosporiumsolani;贮藏
基金项目(Foundation):
作者(Author): K.Y.Ryu,罗文富,杨艳丽,陈海如,郭华春,王毅
参考文献(References)：
- [1]Carnegie,S .F .,Cameron,A .M .,Lindsay,D .A .,Sharp,E .,andNevison,I.M .Theeffectoftreatingseedpotatotuberswithbenzimidazole,imidazoleandphenylpyrrolefungicidesonthecontrolofrotandskinblemishdisease.Ann.appl.Biol.,1998,133:343-363.
- [2]Dashwood,E .P .,Fox,R .A .,andPerry,D .A .Effectinin oculumssourceonrootandtuberinfectionbypotatoblemishdis easefungi.PlantPathology,1992,41:215-223.
- [3]Ellis,M .B .Helminthosporiumsolani.CMIdescriptionofpathogenicfungiandbacteria.1968.No.166.
- [4]Hide,G .A .andHall,S .M .Developmentofresistancetothi abendazoleinHelminthosporiumsolani(sliverscurf)asaresultofpotatoseedtubertreatment.PlantPathology,1993,42:707-714.
- [5]Hooker,W .J.Compendiumofpotatodisease.AmericanPhy topathologicalSocietypress.1981,54-55.
- [6]Merida,C .L .,Loria,R .andHalseth,D .E .Effectsofpotatocultivarsandtimeofharvestontheseverityofsilverscurf.PlantDis.,1994,78:146-149.
- [7]Olivier,C .,Halseth,D .E .,o,E .S .G .,andLoriaR .Appli cationoforganicandinorganicsaltsforsuppressionofsilverscurfonpotatotubers.PlantDis.1998,82:213-217.
- [8]Read,P .J.,Storey,R .M .J.,andHudson,D .R .AsurveyofblackdotandotherfungaltuberblemishingdiseaseinBritishpotatocropsatharvest.Ann.appl.Biol.,1995,126:249-258.
- [9]Rodriguez,D .A .,Secor,G .A .,Gudmestad,N .C .,andFrancl,L .J .1996.SporulationofHelminthosporiumsolaniandinfectionofpotatotubersinseedandcommercialstorages.PlantDis.,1996,80:1063-1070.
- [10]Smith,B .J.andBlack,L .L .Morphological,cultural,andpathogenicvariationamongCollectotrichumspeciesisolatedfromstrawberry.PlantDis.,1990,74:69-76