Figure 3.

Effect of quercetin derivative concentrations and terms of measurement on relative chlorophyll content (Term 1—first day after the first treatment, Term 2—seventh days after the first treatment, Term 3—first day after the second treatment, Term 4—seventh days after the second treatment). Capital letters indicate significant differences between the means at measurement terms for each quercetin derivative concentrations, lowercase letters indicate significant differences between the means at respective measurement terms according to ANOVA (followed by Tukey’s HSD test, p = 0.05).