Fig. 3. Predictive ability obtained for fruit firmness, fruit weight, and yield when considering training population size and composition.

a Cumulative increase of the training population size considering family information and b cumulative increase of the training population size considering random sampling. Letters on top of boxplots represent the results obtained in the post hoc analysis considering Tukey correction and σ = 0.05, groups that share a letter are not significantly different from one another and $a>b>\dots >z$. The post hoc test was performed for each trait comparing all results for both sampling scenarios.