Floral Organ in Vitro Culture of Clivia miniata Regei Molecular Cloning and Sequence of Acid Invertase Gene Fragments(CMCW1) from Clivia miniata A New Clivia miniata Cultivar‘Yangjun 2’ A New Clivia miniata Cultivar‘Yangjun 2’ Tetraploid Induction and Chromosome Identification from Immature Embryo with Colchicine Treatment in Clivia miniata Floral Organ in Vitro Culture of Clivia miniata Regei Molecular Cloning and Sequence of Acid Invertase Gene Fragments(CMCW1) from Clivia miniata Breeding and Cultivation Techniques of the New Cultivar Clivia miniata ‘Yangjun 1’