Figure 6.

Antioxidant activities of ethanolic extracts from the pulp (A) and peel (B) from peaches harvested from Prunus persica trees var. “Sugar Time” and “West Rose” after treatment with different concentrations (2.5, 4.0 or 5.0 L/ha) of biostimulant or with water alone. In the different panels, CTRL identifies samples harvested from trees treated with water only. The histograms show the cellular antioxidant activity (CAA) expressed as 1/CAA₅₀, while the dashed lines indicate the radical scavenging activity (dark green: ABTS; purple: DPPH) or reducing metal (light green: FRAP) measured as µmol TE per 100 g of FW. Within the same series, different lowercase (var. Sugar Time) or uppercase (var. West Rose) letters indicate significant difference at the p ≤ 0.05 level as measured by one-way ANOVA followed by Tukey’s multiple range test.