Figure 2.

Change in enzymatic activity by time (T0 = immediately after apple cut, T1 = 1 h after cut, T2 = 24 h after cut): (A) = peroxidase units (uPOD) and polyphenol oxidase units (uPPO); (B) = indole-3-acetic acid oxidase units/g FW (uIAAox) over time. Means displayed are averages from all 14 cultivars. Means ± standard error displayed. Different letters above bars indicate differences according to Tukey post-hoc mean comparison at a p < 0.05. NS (non-significant difference) for IAA ox at either absorbance across time points. No significant interactions were detected by cultivar x time for enzymatic activities when assessed by ANOVA at p < 0.05.