Analysis of variance (ANOVA) was used to determine the percentage of internode lesions on the California greenhouse experiment, using a factorial model for fixed effects plant genotype and experiment. For this, % internode lesions were converted to the mid-point of the percent range for each scale value (e.g., 45% for a score of “6”). ANOVA was performed using the MIXED procedure in SAS, with Kenward–Roger as the denominator degrees of freedom method (Littell et al. 1996). Homogeneity of variance across treatments was confirmed according to (Box et al. 1978). For significant effects (p < 0.05), differences among means were assessed based on the overlap of their 95% confidence intervals, and means without overlapping intervals were considered significantly different (Westfall et al. 1999).