Average final area of individual leaves on lateral long shoots in different growth stages in 2017 for apple cultivars ‘Ariane’, ‘Braeburn’ and ‘Fuji’ under WW and WS conditions. Statistical analyses were performed using two linear models first considering water treatment and cultivars and their interaction for each growing stage (lower part of the table) and then considering the stage effect for each cultivar–water treatment combination (right side of the table). ANOVA was then used to assess the significance of each effect (ns, not significant, * 0.01 < P < 0.05, *** P < 0.001). For each year, different letters indicate significant differences (P < 0.05) in post hoc comparisons