Fig. 8From: Growth performance and wood structure of wavy grain sycamore maple (Acer pseudoplatanus L.) in a progeny trialComparison of the groups “standard seed stands” and “plus tree mother” of the A. pseudoplatanus progeny trials Romrod and Schotten. a DBH. b Tree height. Boxplot with additional information on single tree data (black dots). Different letters indicate significant differences in pairwise comparison of the groups (Tukey’s test, limit p < 0.05). n = standard 125, plus tree 199Back to article page