Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Triticale (x Triticosecale Wittmack) Lines

Version 1 : Received: 2 November 2020 / Approved: 3 November 2020 / Online: 3 November 2020 (08:06:53 CET)

How to cite: Góral, T.; Wiśniewska, H.; Ochodzki, P.; Twardawska, A.; Walentyn-Góral, D. Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Triticale (x Triticosecale Wittmack) Lines. Preprints 2020, 2020110142 (doi: 10.20944/preprints202011.0142.v1). Góral, T.; Wiśniewska, H.; Ochodzki, P.; Twardawska, A.; Walentyn-Góral, D. Resistance to Fusarium Head Blight, Kernel Damage and Concentration of Fusarium Mycotoxins in Grain of Winter Triticale (x Triticosecale Wittmack) Lines. Preprints 2020, 2020110142 (doi: 10.20944/preprints202011.0142.v1).

Abstract

Fusarium head blight (FHB) can cause contamination of cereal grain with mycotoxins. Triticale is also infected with FHB; however, it is more resistant than wheat to head infection. The aim of this study was to identify triticale lines that combine low head infection with low toxin contamination. Resistance to FHB of 15 winter triticale and three winter wheat lines 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 10.7%. The proportion of FDK was 18.1% (weight) and 21.6% (number). An average content of deoxynivalenol for wheat amounted to 7.258 mg/kg and nivalenol to 5.267 mg/kg. In total, it was 12.788 m/kg of type B trichothecenes. The zearalenone content in the grain was 0.805 mg/kg. Relationships between FHB index, FDK and mycotoxin contents were statistically significant for triticale lines; however, they were stronger for FDK versus mycotoxins. Lines combing all types of FHB resistance were found, and two of them had resistance similar to that of wheat lines with the Fhb1 gene.

Subject Areas

deoxynivalenol; Fusarium culmorum; Fusarium head blight; nivalenol; triticale; trichothecenes; zearalenone

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