Figure 9From: Black locust (Robinia pseudoacacia L.) ecophysiological and morphological adaptations to drought and their consequence on biomass production and water-use efficiencyMean values and standard deviation of leaf size for the different treatments in relation to relative soil water availability A) individual leaf area, B) total leaf area, measured at the harvest on 8 November 2011. A) parametric analysis, Robust Test, Post-Hoc Games-Howell, non parametric analysis Mann–Whitney U-Test. *Different letters indicate significant difference (p <0.05).Back to article page