บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Differential control of head blight pathogens of wheat by fungicides and consequences for mycotoxin contamination of grain.

SIMPSON, D.R., WESTON, G.E., TURNER. J.A., JENNINGS, P. and NICHOLSON, P.

European Journal of Plant Pathology 107: 421 – 431.

2001

บทคัดย่อ

Differential control of head blight pathogens of wheat by fungicides and consequences for mycotoxin contamination of grain.

Fusarium head blight of wheat is caused by a disease complex comprised of toxigenic pathogens, predominantly Fusarium species, and a non-toxigenic pathogen Microdochium nivale, which causes symptoms visually indistinguishable from Fusarium and is often included as a causal agent. In this study, the effects of fungicide treatments on colonisation by Fusarium and Microdochium, and on the production of DON were investigated. Tebuconazole selectively controlled F. culmorum and F. avenaceum and reduced levels of DON, but showed little control of M.nivale. Application of azoxystrobin, however, selectively controlled M.nivale and allowed greater colonosation by toxigenic Fusarium species and this treatment also resulted in increased levels of DON. Azoxystrobin application two days post – inoculation increased the production of DON per unit of pathogen in an artificially inoculated field trial.