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Effects of indole-3-butyric acid (IBA) on adventitious root formation in apple rootstock ‘T337’. (A) Morphological changes in ‘T337’ cultural cuttings after treatment with IBA and control for 0, 3, 7, 11, 16 days. Scale bars = 0.5 cm. (B) Rooting rate in ‘T337’ with IBA treatment and control at 16 days per 50 cuttings. (C) Root length in ‘T337’ with IBA treatment and control at 16 days per 50 cuttings.
