河南鄢陵甜瓜与辣椒露地套种栽培萎蔫性病害鉴定

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中图分类号：S652+S641.3 文献标志码：A 文章编号：1673-2871（2025）11-092-07

Abstract：Toclarifythecauses of widespread wilting and roting of plants and fruits in the intercropping systemof thin-skinned melonand pepper inYanling，Henanprovince，this studycolected typicaldiseased melonand pepperplants， as wellasrotenfruits，fromtheaffectedareas.Thepathogenwasisolated，inoculated，ande-isolated.hroughoho logicalbservation，pathogenicitytests，ndmolecularidentification，thepathogenasfoundtoexhibitcharactersticfeaturesof Phytophthora spp.，includinghyphae，sporangia，andsporangiospores.Inoculation experiments demonstratedthat the pathogencaused water-soaked brown lesionson melonand pepperplants andled to water-soaked lesions and white mold-like growth on infected fruits.Molecular analysis ofthe ITS sequenceconfirmedthepathogen as Phytophthora capsici.Furthermore，aplateconfrontationassayrevealedthattheBacilusvelezensisstrain78-2significantlyinhibitedthe growth of P. capsici colonies，indicating itsantagonistic activity against thepathogen.This study identified Phytophthora blightasthecauseoflarge-scalewiltingandrotingin Yanling’smelonandpeppercropsandprovidedtheoreticalsupport forarlydiagnosisandcontrolofPhytophthorablightinmelonandpepper，oferingcriticalinsightsfor thesustainabledevelopment of the melon and pepper industry.

KeyWords：Melon;Pepper;Intercroppincuivation;Pathogenidentiication;Phyophthorablight;Antagonsticbactera

甜瓜（CucumismeloL.）在我国是一种重要的水果型园艺作物，栽培面积和产量常年位居世界首位。（剩余9257字）