鄭州市草莓炭疽病病原菌的分離鑒定及防治藥劑篩選

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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

草莓炭疽病可為害草莓整個(gè)生長(zhǎng)期，以育苗期和移栽定植期最重，可侵害草莓各個(gè)部位，造成局部病斑或整株枯死，給農(nóng)民帶來(lái)嚴(yán)重的經(jīng)濟(jì)損失。（剩余8460字）