Effects of infection time and moisture on development of ear blight and deoxynivalenol production by Fusarium spp. in wheat

A - Papers appearing in refereed journals

Lacey, J., Bateman, G. L. and Mirocha, C. J. 1999. Effects of infection time and moisture on development of ear blight and deoxynivalenol production by Fusarium spp. in wheat. Annals of Applied Biology. 134 (3), pp. 277-283.

AuthorsLacey, J., Bateman, G. L. and Mirocha, C. J.
Abstract

Wheat ears were inoculated with conidia of Fusarium spp. at different growth stages between ear emergence and harvest and moist conditions were maintained for up to 7 days subsequently by mist irrigation. Of the fungi tested (Fusarium culmorum, F. avenaceum, F. tricinctum, F. sporotrichioides and Microdochium nivale), only F. culmorum produced ear blight symptoms and grain samples were found subsequently to contain deoxynivalenol. Most ear infection and deoxynivalenol formation occurred following inoculation at about mid-anthesis. Small amounts of deoxynivalenol were formed and some F. culmorum was isolated even in the absence of ear blight symptoms. An overnight wet period was sufficient to initiate infection and deoxynivalenol formation but both were increased by extending the wet period up to at least 3 days. Recovery of Fusarium spp, from harvested grain was usually possible whether or not symptoms developed. F. culmorum usually persisted and often increased to moderately high levels after storage for 7 wk in a range of moisture conditions.

KeywordsAgriculture, Multidisciplinary
Year of Publication1999
JournalAnnals of Applied Biology
Journal citation134 (3), pp. 277-283
Digital Object Identifier (DOI)doi:10.1111/j.1744-7348.1999.tb05265.x
Open accessPublished as non-open access
Funder project or code204
423
Publisher's version
PublisherWiley
ISSN0003-4746

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