Additional file 11. Maximum specific growth rates for each species and synthetic hybrids in specific media conditions. The average values (n = 2) of maximum growth rate (µ, defined as (ln(OD2)-ln(OD1))/(T2-T1)), from data represented in Fig. 6 but categorized by each condition and by species, are shown as boxplots. Letters are Dunn’s test homogeneous groups inferred from pairwise comparisons. Colored boxplots and data points are according to the legend. Median values for each population are represented by a horizontal line inside the box, and the upper and lower whiskers represent the highest and lowest values of the 1.5 * IQR (inter-quartile range), respectively. HTs: hydrolysate toxins.