IN-VITRO ORGANOGENIC COMPETENCE OF DIFFERENT ORGANS AND TISSUES OF LILY-OF-THE-VALLEY GRANDIFLORA OF NANTES

The in vitro organogenic competence of rhizome and flower stalk discs, flower buds and meristems of lily of the valley (Convallaria majalis L.) 'Grandiflora of Nantes' was studied. Except for the meristems, the other organs were all capable of organogenesis. Rhizome and flower st alk discs formed roots, while flower buds formed flower bud-like struc tures, and it appeared very difficult to modify the type of organogene sis. After six subcultures of the flower bud-like structures, a series of developmental stages were distinguished, i.e. regeneration of flow er bud-like structures first, then leaf-like organs, and finally veget ative buds. This work pointed out the organogenic competence of the rh izome and flower stalk fragments for the first time.