Establishment of tissue culture and rapid propagation system of Typhonium flagelliforme A High-efficiency Regeneration System for Immature Embryo of Ziziphus jujuba‘Dongzao’at Very Early Stage A High-efficiency Regeneration System for Immature Embryo of Ziziphus jujuba‘Dongzao’at Very Early Stage Establishment of tissue culture and rapid propagation system of Typhonium flagelliforme