烟草赤星病菌与黑斑病菌生物学特性比较研究.doc

烟草赤星病菌与黑斑病菌生物学特性比较研究

任建国1，王俊丽1，岳美云2，张剑峰3

(1.贵州省果树科学研究所，贵州贵阳550006；2.山东省阳信县林业局，山东阳信251800；3.青岛农业大学农学与植保学院，山东青岛266109)

摘要：对烟草赤星病菌和黑斑病菌基本生物学特性进行比较研究。结果表明，Alternarialongipes和Alternariatabacina的最适生长温度分别为25～30℃和20～25℃；pH6~9培养条件更有利于A.longipes的生长；A.longipes利用葡萄糖和蔗糖的能力明显大于A.tabacina；两病原菌对硝酸铵、硫酸铵和干酪素的利用情况基本相同，利用能力大小依次为干酪素硝酸铵硫酸铵；马铃薯琼脂培养基，葡萄糖琼脂培养基和蔗糖琼脂培养基分别对两病原菌直线生长的影响作用存在显著差异性，玉米粉琼脂培养基对两病原菌生长的影响作用无差异性。扑海因和代森锰锌能完全抑制A.longipes和A.tabacina营养生长，百菌清和翠贝分别对两病原菌的生长抑制作用无明显差异，甲基托布津对A.tabacina的抑制能力强于对A.longipes的。

关键词：烟草赤星病菌；烟草黑斑病菌；生物学特性；比较

ComparableStudiesontheBiologicalcharacteristicsofAlternarialongipesandAlternariatabacina

RENJian-guo1,WANGJun-li1,YUEMei-yun2,ZHANGJian-feng3

(1.FruitScienceInstituteofGuizhouProvince,Guiyang,Guizhou550006,China;2.ForestryBureauofYangxinCountryofShandongProvince,Yangxin251800,China;3.CollegeofAgronomyandPlantProtection,QingdaoAgriculturalUniversity,Qingdao266109,China)

Abstract:ThecomparablestudiesonbiologicalcharacteristicsofAlternarialongipesandAlternariatabacinawerecarriedon.TheresultsshowedthattheoptimaltemperaturesofAlternarialongipesandAlternariatabacinawere25～30℃and20～25℃,respectively;A.longipesgrewwellthanA.tabacinaunderpH6~9;theavailabilityforA.longipesonglucoseandsugarwashigherthanthatforA.tabacina;thecoincidentresultsweregotforAlternarialongipesandAlternariatabacinaontheavailabilityofacmoniumnitrate,acmoniumsulfateandcasein,andtheavailableabilityrankedasfollowings:caseinacmoniumnitrateacmoniumsulfate;ThereweresignificantdifferencesinmyceliagrowthofAlternarialongipesandAlternariatabacinaonpotatoagar,glucoseagarandsugaragarrespectively,whilenodifferencesexistedbetweenthatofAlternarialongipesandAlternariatabacinaoncornmealagar.IprodioneandMancozebtotallyinhibitedthegrowthofA.longipesandA.tabacina,nodifferencesexsitedontheinhibitive