Fig. 6

Phenotypic responses to selection for early mating and relaxation of selection in advanced generation hybrids. a Violin plot, box plot and line plot of mean from generations 25, 26 and 35 for mating time partitioned by the three lines maintained after selection for early maters. A trendline (red line) for the mean mating time was plotted for each subline across generations. b Bubble plot of callus colour in generations 25, 26 and 35, partitioned by the three lines maintained after selection for early maters. Sample size is proportional to the size of the bubble. A trendline (red line) for the mean of the ordinal callus classes was plotted for each subline across generations. F25 represented the pre-selection generation; F26 represented the post-1st selection generation while F35 was eight generations of no selection after selection was applied at F25 and F26. Pairwise Mann-Whitney U tests were performed on the F25-F26 and F26-F35 comparisons