Root rot pathogens of melon and their pathogenicity in Kashi,Xinjiang
ZHAO Mengjuan
ZHOU Tingting
HAN Sheng
GU Qinsheng
WU Huijie
Maihemutijiang·Mijiti
ZHANG Zeyi
Meirebang·Yakepu
Yushanjiang·Maimaiti
Abstract：In order to clarify the pathogen species and their pathogenicity of melon root rot in Gashi county,Kashgar region,Xinjiang.Samples of melon root rot were collected,pathogen isolated and identification.The pathogens were isolated and purified by tissue isolation method,and verificated by Koch's law.Then pathogens were identificated by com-bining morphological characteristics and phylogenetic analysis based on multi-loci(ITS+TEF1-α+RPB2).The results showed that the pathogens of melon root rot in Gashi county were mainly Neocosmospora falciformis,Fusarium glycines and N.solani.Among them,strains Z3,Z11 and Z27,with high pathogenicity,were inoculated on the same melon variety to determine the pathogenicity.The results demonstrated that these three strains significantly reduced the root length,plant height,stem mass and root mass of melon seedlings,with the disease indexes of 68,84 and 74 for Z3,Z11 and Z27,respectively.Strain Z11(F.glycines)had the strongest pathogenicity.In this study,N.falciformis and F glycines were identified for the first time as pathogens of melon root rot in Xinjiang,which enriched the etiology of melon root rot and provided a theoretical basis for the diagnosis,control and resistance breeding of melon root rot.
Keywords：MelonRoot rotNeocosmospora falciformisFusarium glycinesPathogenicity test
Publication Date：2025-07-05
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 25-33 )