Figure 1.

Multiple comparisons of the effects of cultivar, collection period, and location combinations (highest order interactions) on the concentrations of (a,b) hydroxytyrosol, (c) verbascoside, (d) luteolin-7-O-glucoside, and (e) oleuropein in leaves of Drobnica, Istarska bjelica (I. bjelica), Lastovka, Leccino, Levantinka, and Oblica olive cultivars collected at different periods (CP1—October 2017, CP2—January 2018, and CP3—March 2018) in two different locations (Pag and Zadar) in Croatia (burgundy, beige, and turquoise colors of histogram bars represent collecting periods CP1, CP2, and CP3, respectively, while lighter and darker gray colors (histogram bars and backgrounds) represent Pag and Zadar locations, respectively). Different superscript lowercase letters represent statistically significant differences between mean values at p < 0.05 obtained by a one-way ANOVA and Tukey’s test.