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Direct somatic embryogenesis and adventitious shoot formation from immature axillary buds of Melastoma affine

Summary Direct somatic embryogenesis and adventitious shoot formation were induced from immature axillary bud explants of Melastoma affine cultured on induction medium containing both naphthaleneacetic acid (NAA) and cytokinins. Among the cytokinins tested, thidiazuron (TDZ) played a greater role in the induction of somatic embryogenesis than 6-benzylaminopurine (BA) and kinetin (KT). Histological studies of paraffin sections showed that the same tissue from immature axillary buds produced different types of explants that developed floral primordia and vegetative bud primordia during the earlier and later flowering stages, respectively. These could result in different developmental pathways. Efficient mass propagation and plant regeneration systems were established for Melastoma affine.