Natural contamination with nivalenol and deoxynivalenol in durum wheat germplasms in argentina.

PALACIOS, S.; FARNOCHI, M.C; RAMIREZ, M.L; REYNOSO, M.M.; ZAPPACOSTA, D. ; SORESI, D; TORRES, A.M.

Mérida

Congreso; VI Latin American Congress of Mycotoxicology and II International Symposium on algal and fungal toxins for Industry; 2010

Sociedad Latinoamericana de Micotoxicologia

In Argentina durum wheat (Triticum durum Desfontaines) is manly used for the elaboration of dried “pasta”. The national production of “pasta” in 2008 reached 369,600 ton and the consumption per capita was estimated in 8.5 kg/year. The total production is devoted to the local market, since an important decrease in the cropping area, in the last decades, made impossible the international market. This decrease can be explained by different factors such as: a) the demand of varieties with differentiated quality, b) the advance of new commodities with best profitability and c) decrease in the yield and grain quality due to fungal diseases, mainly Fusarium head blight (FHB). Previous studies in our country have shown that the main pathogen associated with FHB is F. graminearum Schwabe. Mycotoxins are frequently associated with the growth and invasion of cereal grains by FHB fungi, being thetrichothecenes the most important ones. FHB is the disease that more challenges present forits control. The search for resistant germplasms is one of the strategies to reduce the impact of this disease. Triticum durum Desfontaines) is manly used for the elaboration of dried “pasta”. The national production of “pasta” in 2008 reached 369,600 ton and the consumption per capita was estimated in 8.5 kg/year. The total production is devoted to the local market, since an important decrease in the cropping area, in the last decades, made impossible the international market. This decrease can be explained by different factors such as: a) the demand of varieties with differentiated quality, b) the advance of new commodities with best profitability and c) decrease in the yield and grain quality due to fungal diseases, mainly Fusarium head blight (FHB). Previous studies in our country have shown that the main pathogen associated with FHB is F. graminearum Schwabe. Mycotoxins are frequently associated with the growth and invasion of cereal grains by FHB fungi, being thetrichothecenes the most important ones. FHB is the disease that more challenges present forits control. The search for resistant germplasms is one of the strategies to reduce the impact of this disease.