Effect of prothioconazole + fluoxastrobin (a), prothioconazole (b) and azoxystrobin (c) on conidial germination of F. graminearum. Conidia at a concentration of 106 conidia/ml were challenged with a tenfold dilution series of fluoxastrobin + prothioconazole, azoxystrobin and prothioconazole starting from 0.5 g/l + 0.5 g/l, 0.83 g/l and 0.67 g/l. For each treatment and repetition 50 conidia were scored for their germination and percentage of conidial germination was calculated at 4 h (solid line), 24 h (dashed line) and 48 h (point dashed line) after staining with 0.02% of cotton blue in lactic acid. Experiment consisted of two repetitions for each treatment and the experiment was repeated three times. Graphs represent the average of all three experiments. Different letters at each data point indicate differences from the control treatment at 4 h (**), 24 h (*) and 48 h after analysis with a Kruskall-Wallis and Mann-Whitney test with a sequential Bonferroni correction for multiple comparisons.