Working Paper Article Version 1 This version is not peer-reviewed

Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Wheat Lines

Version 1 : Received: 14 May 2021 / Approved: 17 May 2021 / Online: 17 May 2021 (09:56:21 CEST)

How to cite: Ochodzki, P.; Twardawska, A.; Wiśniewska, H.; Góral, T. Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Wheat Lines. Preprints 2021, 2021050379 Ochodzki, P.; Twardawska, A.; Wiśniewska, H.; Góral, T. Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Wheat Lines. Preprints 2021, 2021050379

Abstract

Fusarium head blight (FHB) can cause contamination of cereal grain with mycotoxins. Winter wheat is also infected with FHB. It is more resistant than durum wheat to head infection and less than other small grain cereals. The aim of this study was to identify winter wheat lines that combine low head infection and kernel damage with low toxin contamination. Resistance to FHB of 27 winter wheat lines and cultivars was evaluated over a three-year experiment established in two locations. At the anthesis stage, heads were inoculated with Fusarium culmorum isolates. The FHB index was scored and the percentage of Fusarium-damaged kernels (FDKs) assessed. The grain was analysed for type B trichothecenes (deoxynivalenol and derivatives, nivalenol) and zearalenone content. The average FHB index was 12.9%. The proportion of FDK was 6.9% (weight) and 8.5% (number). An average content of deoxynivalenol amounted to 3.543 mg/kg and nivalenol to 2.115 mg/kg. In total, it was 5.804 m/kg of type B trichothecenes. The zearalenone content in the grain was 0.214 mg/kg. Relationships between FHB index, FDK and mycotoxin contents were highly significant for wheat lines; however, they were stronger for FDK versus mycotoxins. Breeding lines combing all types of FHB resistance were found, and five of them had resistance similar to that of wheat lines with the Fhb1 gene.

Subject Areas

winter wheat; mycotoxins; Fusarium; resistance; ergosterol; trichothecenes; zearalenone

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