新疆喀什地区甜瓜根腐病病原菌及其致病性

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中图分类号：S652 文献标志码：A 文章编号：1673-2871（2025）07-025-09

Root rot pathogens of melon and their pathogenicity in Kashi， Xinjiang

ZHAO Mengjuan12，ZHOU Tingting2，HANSheng²， GU Qinsheng²， WU Huijie³， Maihemutijiang·Mijiti'， ZHANG Zeyi'，Meirebang ⋅⋅ Yakepu4，Yushanjiang·Maimaiti²

（1.CollgeofAgriculture，XinjiangAgriculturalUniversityKeyLaboratoryofPestMonitoringndSafetyControlofCrosand ForestsUi;ftoeclK IntegratedPestanagementonCosinorthwesteasisiistryofAgricultureanduralAfsUrumioinjang China;3ZFteahsiutedemcalgo; UyghurAutonomousRegionAgricultural TechnologyExtensionStation，Urumqio49，Xinjiang，ina）

Abstract：Inorder toclarifythepathogenspeciesand theirpathogenicityofmelonrootrotinGashicountyKashgar region，Xinjiang.Samplesof melonrootrotwerecollcted，pathogen isolatedandidentification.Thepathogenswere isolatedandpurifiedbytissue isolation method，andverificatedbyKoch'slaw.Thenpathogens wereidentificatedbycombiningmorphological characteristicsand phylogenetic analysis based onmulti-loci（ITS + TEF1- a+ RPB2）.Theresults showedthatthe pathogens of melonrootrot in Gashi county weremainlyNeocosmospora falciformis，Fusarium glycines and N. solani.Among them，strains Z3，Z11 and Z27，withhigh pathogenicity，were inoculatedon thesame melon variety todetermine the pathogenicity.The results demonstrated thatthese three strains significantlyreduced theroot length， plantheight，stem massandrootmassofmelonseedlings，withthedisease indexesof68，84and74forZ3，Z1land Z27， respectively. Strain Z11 （F. glycines）had the strongest pathogenicity. In this study， N. falciformisand F. glycines were identifiedforthefirsttimeaspathogensofmelonrootrotinXinjiang，whichenrichedtheetiologyofmelonroototand provided a theoretical basis for the diagnosis，control and resistance breeding of melon root rot.

Key words：Melon;Root rot;Neocosmospora falciformis;Fusarium glycines;Pathogenicity test

甜瓜（CucumismeloL.）是葫芦科黄瓜属的一种一年生蔓性草本植物，因具有较高的营养价值和经济价值而被广泛种植。（剩余14141字）