Kultur in vitro daun melastoma malabathricum l. pada medium murashige & skoog (1962) (MS) modifikasi dengan penambahan thidiazuron (TDZ) dan asam 2,4-diklorofenoksiasetat (2,4-D) = In vitro culture from leaves of melastoma malabathricum l. on murashige & skoog (1962) (MS) medium with thidiazuron (TDZ) and 2,4-dichlorophenoxyacetic acid (2,4-D)