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Progression of Deoxynivalenol Concentrations in Spikes and Kernels of Winter Wheat Cultivars after Inoculation with Fusarium culmorum

Author

Listed:
  • Jana Chrpová

    (Research Institute of Crop Production, Prague-Ruzyně, Czech Republic)

  • Václav Šíp

    (Research Institute of Crop Production, Prague-Ruzyně, Czech Republic)

  • Eva Matějová

    (Research Institute of Crop Production, Prague-Ruzyně, Czech Republic)

  • Světlana Sýkorová

    (Research Institute of Crop Production, Prague-Ruzyně, Czech Republic)

Abstract

Progression of deoxynivalenol (DON) concentrations in spikes and kernels was studied in relation to Fusarium head blight (FHB) symptoms in five winter wheat cultivars, differing in resistance to FHB, after single floret inoculation with an aggressive isolate of Fusarium culmorum. After inoculation in field conditions the spikes were detached from the plant and kept in the greenhouse under controlled conditions. High concentrations of DON were detected in susceptible cultivars at an early stage of pathogenesis (7 days after inoculation). Over the whole examined 21-day period and also at maturity spikes contained more DON than kernels. While differences between cultivars in the accumulation of DON were highly expressed already 7 days after inoculation, differences in symptomatic reactions were not clear until day 21. Owing to the reported crucial role of DON at early stages of pathogenesis, the importance of appropriate timing of fungicide application is highly stressed.

Suggested Citation

  • Jana Chrpová & Václav Šíp & Eva Matějová & Světlana Sýkorová, 2006. "Progression of Deoxynivalenol Concentrations in Spikes and Kernels of Winter Wheat Cultivars after Inoculation with Fusarium culmorum," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 42(4), pages 137-141.
    • Handle: RePEc:caa:jnlcjg:v:42:y:2006:i:4:id:3644-cjgpb
    DOI: 10.17221/3644-CJGPB
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