Prevalence, pathogenicity and cultivar resistance of Fusarium and Rhizoctonia species causing soybean root rot

Published on Mar 1, 2013in Canadian Journal of Plant Science0.986
· DOI :10.4141/cjps2012-223
J. X. Zhang7
Estimated H-index: 7
(AAFC: Agriculture and Agri-Food Canada),
Allen Xue16
Estimated H-index: 16
(AAFC: Agriculture and Agri-Food Canada)
+ 4 AuthorsEd Gregorich6
Estimated H-index: 6
(AAFC: Agriculture and Agri-Food Canada)
Zhang, J. X., Xue, A. G., Cober, E. R., Morrison, M. J., Zhang, H. J., Zhang, S. Z. and Gregorich, E. 2013. Prevalence, pathogenicity and cultivar resistance of Fusarium and Rhizoctonia species causing soybean root rot. Can. J. Plant Sci. 93: 221–236. Root rot complex, caused by Fusarium and Rhizoctonia species, is a major soybean disease in Canada. We isolated nine Fusarium and Rhizoctonia species including F. oxysporum (Fo), F. graminearum (Fg), F. solani (Fs), F. avenaceum (Fa), F. tricinctum (Ft), F. sporotrichioides (Fsp), F. equiseti (Fe), F. poae (Fp), and R. solani (Rs) from soybean roots in eastern Ontario, Canada. The isolation results indicated that Fo was the most prevalent species while Fa, Fsp, and Fp were the least frequent species in the soybean rhizosphere. Numbers of Fo, Fs, Fg, and Rs isolates recovered from adult plant roots were significantly greater than those from seedling roots (P<0.01). The Rs, Fg and Fsp isolates were significantly more abundant in the no-till field than in the t...
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