Fig. 2

Antioxidant enzyme activity patterns in ungrafted and grafted plum rootstock candidates. (A) catalase (CAT) activity in ungrafted rootstock candidates, (B) catalase (CAT) activity in grafting combinations, (C) peroxidase (POD) activity in ungrafted rootstock candidates, (D) peroxidase (POD) activity in grafting combinations, (E) superoxide dismutase (SOD) activity in ungrafted rootstock candidates, and (F) superoxide dismutase (SOD) activity in grafting combinations. Different letters above bars indicate statistically significant differences according to Duncan’s multiple range test (p < 0.05). Values are means ± SE.