Response to Fusarium culmorum inoculation in barley |
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Authors: | Bernard Van?o Svetlana ?liková Valéria ?udyova Antónia ?robárová |
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Institution: | (1) Slovak Central Agricultural Research, Research Institute of Plant Production, Institute of Applied Genetics and Breeding, Bratislavská cesta 122, SK-92168 Piešťany, Slovakia;(2) Institute of Botany, Slovak Academy of Science, Dúbravská cesta 14, SK-84523 Bratislava, Slovakia |
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Abstract: | In field tests replicated in 2004 and 2005, 32 cultivars of spring barley were assessed for resistance to Fusarium head blight
(FHB) by single floret inoculation and spray inoculation with Fusarium culmorum (W. G. Smith) Sacc. It was found that the weather conditions in individual years affect to a large extent the progression
of FHB and production of mycotoxin deoxynivalenol (DON). At the same time, in both years the cultivars reacted to F. culmorum infection similarly with respect to areas under disease progress curve (AUDPC) values and content of mycotoxin DON. Spraying
inoculation led to stronger infection. The biggest differences in AUDPC values were observed between the cultivars Brise and
Celinka, and weak reaction was found in the cultivars Kompakt and Madonna. The cultivars Kompakt and Tolar were most resistant
towards FHB. In both monitored years the variety Ludan contained the lowest amounts of mycotoxin DON. Cultivars with high
infection and low DON content (r = 0.78) showed weak positive relationship between resistance to FBH and accumulation of DON (concentration 70–200 mg/kg).
This is the first information on FHB and in vivo concentrations of DON in certificated barley cultivars in Slovakia. |
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Keywords: | Fusarium head blight deoxynivalenol resistance cultivars |
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