郑州市草莓炭疽病病原菌的分离鉴定及防治药剂筛选

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Isolation，Identificationand ScreeningofControlAgents for StrawberryAnthraxPathogen in Zhengzhot

Abstract：ToidentifythepathogenspeciescausingstrawberyanthracnoseinZhengzouandscreenefectivefungicidesfordisease controlplantsinfectedwithstrawberryanthracnosewerecolectedfrommajorstrawberrygrowingareasinZhongmucounty， Zhengzhoucityhathogensereiated，culured，dentifid，oughmorphologicalcaracterizationndmolecularalyis，followedbypathogenicitytests.Eightcommonlyusedfungicideswereselectedtodeterminetheirvitrosensitivityagainsttheisolated Coletotrichumstrains，andteircontrolficacyasfurtherevaluatedbypotexperiments.Thersultsdemonstratedthatthecusalagentofstrawberranthracnosein ZhengzhouwasColltotrichumsiamensewitintheColltotrichumgloeosporioidesspciescomplex. Sensitivity tests revealed that the isolated C.siamense strain exhibited the highest susceptibility to 450 g⋅L-1 prochloraz，with a mean EC 150 value of 0.311 4 μo⋅mL-1 ，followed by difenoconazole （EC5o=14.75 μc⋅mL-1 ） and trifloxystrobin-tebuconazole （EC5o=50.408 1 μg⋅mL-1） .Pot experiments showed that 40% difenoconazole provided the optimal control efficacy，followed by 450 g⋅L-1 prochloraz and 75% trifloxystrobin-tebuconazole.In conclusion， 450g⋅L-1 prochloraz， 40% difenoconazole，and 75% trifloxystrobin-tebuconazole could serve as effective agents for managing strawberry anthracnose in Zhengzhou.

Keywords：strawberyanthracnose；pathogenidentification;fungicidesensitivitytesting;controleficacyinpotexperiment

草莓炭疽病可为害草莓整个生长期，以育苗期和移栽定植期最重，可侵害草莓各个部位，造成局部病斑或整株枯死，给农民带来严重的经济损失。（剩余8460字）