Fig. 1. Adventitious root formation on callus derived from root explant cultures of Paeonia lactiflora Pall. Light yellowish compact callus from root explant cultured in MS medium with 1.0 mg/L NAA and 1.0 mg/L zeatin (A) and adventitious roots formed from callus clone cultures in MS medium with 0.1 mg/L IAA (B), 0.1 mg/L IBA (C), 0.5 mg/L zeatin (D), 0.1 mg/L kinetin (E), and a combination of 0.1 mg/L IBA and 0.5 mg/L zeatin (F). MS: Murashige and Skoog, IAA: indole acetic acid, NAA, naphthalene acetic acid, IBA: indolebutyric acid, 2,4-D: 2,4-dichlorophenoxyacetic acid, BAP: benzylaminopurine
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