It is important to establish an efficient regeneration system for genetically transformation of grapevines.By manipulating hormone levels,light intensities and temperature,we have developed two successful regeneration systems for the winegrape varieties 'Merlot Noir',including somatic embryogenesis and organogenesis.The basic medium,choice of node petiole explants,plant growth regulator concentration and variety all affected the induction of somatic embryos and the regeneration of adventitious buds.Using em...