Fig. 6
From: New insights into polyploid evolution and dynamic nature of Ludwigia section Isnardia (Onagraceae)
Boxplots showing the estimated migration rates (M, migration rates per gene copy per generation) between ploidy levels in Ludwigia sect. Isnardia based on (a) atpB-rbcL and (b) ITS data. Groups on the x axial are coded, showing the direction of the migration rates, e.g., 2 × > 4 × indicates the migration rates from diploids to tetraploids. Letters above each boxplot indicate pairwise statistical differences (p-values < 0.05) between 2 × > 2 × and other groups. The asterisks indicate pairwise statistical differences (p-values < 0.05) between the two groups. The complete details for the statistical analysis are shown in Additional file 8. The estimated migration rates among taxa are available in Additional file 7