中文摘要：赤霉病（FHB），由禾谷镰刀菌引起，是小麦的重要病害，影响粮食产量和颗粒形态，并通过霉菌毒素，包括单端孢霉烯脱氧雪腐镰刀菌烯醇（DON）污染粮食。本研究在不同的环境条件下评估了镰刀菌感染对灌浆、颗粒变形及流变特性的影响。研究表明赤霉病感染压力下流变性能的恢复力是籽粒抗病性的附加成份。
外文摘要：Fusarium head blight (FHB), caused by Fusarium graminearum , is an important wheat disease that affects grain yield and conformation, and contaminates grains with mycotoxins, including the trichothecene deoxynivalenol (DON). The impacts of Fusarium infections on grain filling, grain deformation and rheological properties were assessed under different environmental conditions. Genotypes with elevated grain anthocyanin content were used. Resistance of seven wheat varieties and breeding lines was assessed with artificial infections in the field. Grains from infected and control plots were assessed for proportion of Fusarium damaged kernels, grain filling (thousand kernel weight) and DON accumulation. Biochemical and rheological properties of harvested grain were also assessed. Grain resistance to Fusarium has several components, including resistance against DON accumulation, deformation and stability of grain filling. These mechanisms are interdependent but act independently. Resistance against DON contamination was highly influenced by environmental conditions, but environment had little effect on the other resistance components. Anthocyanins and protein concentrations were unchanged in infected grains, suggesting that FHB does not affect grain biosynthesis processes but impacts the transport of assimilates caused by changes in grain composition. We suggest that this is the reason for the alterations of rheological properties. The greater the grain resistance, the less was the impact on dough properties. This study suggests that the resilience of rheological properties under FHB infection pressure is an additional component of grain resistance to the disease
外文关键词：resistance types；grain filling；anthocyanin；rheological properties；resilience
作者：Martin, C；Schoneberg, T；Vogelgsang, S；Vincenti, J；Bertossa, M；Mauch-Mani, B；Mascher, F
作者单位：Agroscope
期刊名称：PHYTOPATHOLOGIA MEDITERRANEA
期刊影响因子：1.042
出版年份：2017
出版刊次：1
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