2009•Xinjiang nongye kexueRequires access

Identification and pathogenicity determination of the pathogenic Fusarium of soybean root rot in the Altay region of Xinjiang.

Bai LiYan, Zhang QuanDang, Bing Li, Qingyuan Guo

Abstract

253 isolates of Fusarium spp.were isolated from Altay region in Xinjiang from 2007 to 2008.All of these isolates belong to 5 species and 1 variation: F.oxysporum Schlecht,F.solani(Mart.) Sacc.,F.graminearum Schwabel,F.solani var.coeruleum(Sacc.) Booth,F.avenum(Corda Fr.) Sacc.,F.merismoidescorda Corda,and the proportion of them are 46.6%,24.1%,11.8%,9.8%,7.5% and 0.8% respectively.According to the detection of pathogenicity of every species or variation on the Heihe-5 varieties of soybean after false inoculating,the result shows that there are 4 species and 1 variation with different levels of palhogenicity,except F.merismoidescorda Corda,and the dominant isolates is F.oxysporum Schlecht which has the largest appearance frequency and the strongest pathogenicity among these pathogens of soybean Fusarium root rot and followed by F.solani(Mart.) Sacc.

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Key concepts: Biology, Fusarium solani, Pathogenicity, Root rot, Fusarium oxysporum, Inoculation, Fusarium, Botany