Fig. 3. Total chlorophyll (A), hydrogen peroxide (B) and malondialdehyde (C) concentrations in leaves collected during the phenological phases of stretched-out leaves (SL), fruit setting (FS), cluster closing (CC) and bunch ripening (BR) from symptomless (filled bars) or symptomatic (banded histograms) cv. Italia healthy vines (), vines with brown wood-streaking () or with brown wood-streaking and white rot (). Data are means of fifteen replicates ± sd. For each parameter, values with the same letters are not significantly different according to Tukey post-hoc test P⩽0.05.