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ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #381957

Research Project: Biology, Ecology, and Genomics of Pathogenic and Beneficial Microorganisms of Wheat, Barley, and Biofuel Brassicas

Location: Wheat Health, Genetics, and Quality Research

Title: Reaction of winter wheat and barley cultivars to Fusarium pseudograminearum inoculated fields, 2018 and 2019.

item HAGERTY, CHRISTINA - Oregon State University
item LUTCHER, L - Oregon State University
item MCLAUGHLIN, K - Oregon State University
item HAYES, P - Oregon State University
item Garland-Campbell, Kimberly
item Paulitz, Timothy
item GRAEBNER, R - Oregon State University
item KROESE, D - Oregon State University

Submitted to: Agrosystems, Geosciences & Environment
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/18/2021
Publication Date: 5/29/2021
Citation: Hagerty, C., Lutcher, L., Mclaughlin, K.R., Hayes, P., Garland Campbell, K.A., Paulitz, T.C., Graebner, R.C., Kroese, D.R. 2021. Reaction of winter wheat and barley cultivars to Fusarium pseudograminearum inoculated fields, 2018 and 2019. . Agrosystems, Geosciences & Environment. 4(2). Article e20173.

Interpretive Summary: Wheat and barley varieties were screened for resistance to Fusarium crown rot in inoculated field trials at two locations. The number of whiteheads, an indication of disease, was assessed, along with yield and test weight. There were no strong correlations between the disease measurements and yield, hence the need to use measurements of stem browning

Technical Abstract: Fusarium crown rot (FCR) is a yield-limiting disease in arid wheat-producing areas of the inland Pacific Northwest (PNW). Foliar fungicide applications and currently-available seed treatments do not control FCR. Alternative crops that limit severity of disease are not economically feasible. Major-gene resistance is unavailable, but there is preliminary evidence that some wheat and barley cultivars are more resistant than others. We followed up on preliminary work by growing 14 varieties of winter wheat, planted with in-furrow FCR inoculum, for two years and at two locations, in one of the world’s driest wheat producing regions. Two barley cultivars were added to the experiment during the second year of research. Evaluations of cultivar resistance were made by conducting whitehead counts. Whitehead count information was augmented with yield and test weight data. Maximum whitehead counts were measured in plots of the FCR susceptible check cultivar, ‘Stephens.’ There was no evidence of a cultivar-specific relationship between whitehead count and corresponding values for yield and test weight. There was limited evidence that some cultivars have the capacity to compensate for effects of disease.