Fig. 1. Average disease progress curves for doubled haploid lines with different combinations of resistance QTL alleles in two of the six experiments where this phenotype was measured. Figures on the left (98) correspond to the third planting date in 1998. Figures on the right (99) correspond to the first planting date in 1999. Figures in the first panel show results based on untransformed data; figures in the center show the parental lines; and figures in the lower panel show the results from the model adjusted with the Gompertz transformation, which was used to calculate the infection rate.