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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Publications at this Location » Publication #379930

Research Project: Improvement of Barley and Oat for Enhanced Productivity, Quality, and Stress Resistance

Location: Small Grains and Potato Germplasm Research

Title: Fusarium head blight biomass in spring barley comparing 2018 to 2019 in U.S. nurseries

item ABDULLAH, SIDRAT - Orise Fellow
item MNDOWLA, ENINKA - Orise Fellow
item BALDWIN, SUZETTE - University Of Idaho
item KRESS, ELLEN - US Department Of Agriculture (USDA)
item MACKY, RUTH - University Of Minnesota
item SORRELLS, MARK EARL - Cornell University
item GROSS, PATRICK - North Dakota State University
item BRUEGGEMAN, ROBERT - North Dakota State University
item GRIFFEY, CARL - Virginia Tech
item FITZGERALD, JOSHUA - Virginia Tech
item MARSHALL, JULIET - University Of Idaho
item Esvelt Klos, Kathy
item BALDWIN, THOMAS - North Dakota State University

Submitted to: National Fusarium Head Blight Forum
Publication Type: Abstract Only
Publication Acceptance Date: 11/6/2020
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Selection of Fusarium head blight (FHB) resistance in the field has been complicated by the low correlation between severity ratings and deoxynivalenol (DON), particularly for barley. Measurement of fungal biomass by quantitative PCR may alleviate these selection issues by directly estimating fungal infection and growth. Spring barley samples from 2018 and 2019 national FHB nurseries were evaluated for DON, severity rating and biomass. The coefficient of determination (R2) was determined for biomass and DON and for severity rating and DON for 2019 and 2018 nurseries. More technician time was required for biomass estimates than for visual severity ratings in Idaho nurseries. However, biomass had higher correlation to DON than did visual severity ratings in both years. The consistency between 2018 and 2019 of line ranking based on severity rating, biomass and DON was evaluated. Comparing a second year of biomass analysis provided support that this measurement is helpful in giving an overall view of infection in the field and determining resistance in spring barley.