Fig. 4
From: Consequences of cutting off distal ends of cotyledons of Quercus robur acorns before sowing
Influence of experimental treatments on mean pedunculate oak seedling height (cm) at the end of the first growing season (See first figure for explanations). Means with the same letter are not significantly different (p < 0.05 ANOVA followed by Tukey HSD test). Means shown in figures are average of all provenances. The vertical lines represent ±1 standard error of the mean