Figure 6
From: The tempo and modes of evolution of reproductive isolation in fungi

Evolution of Microbotryum (Basidiomycetes) F2 hybrids’ inviability. Inviability is measured as the inability of Microbotryum F2 hybrids to infect host plants and produce symptoms. Continuous, broken and dotted lines stand for the ‘slowdown’, ‘linear’ and ‘snowball’ model, respectively. For each data set, the best model appears in bold.