Establishment of In vitro Bulb Bud Induction and Regeneration System of Amaryllis vittata Ultrastructural Changes of the Microtubule in the Generative Cell of Amaryllis vittata Ait. During Mitosis Ultrastructural Observation on Microtubules of the Generative Cell in Amaryllis Germinated Pollens and Pollen Tubes Rapid Micropropagation System Via in Vitro Culture in Amaryllis vittata and ItsEmbryogenesis Rapid Micropropagation System Via in Vitro Culture in Amaryllis vittata and ItsEmbryogenesis Molecular Cloning of a Novel Mannose-binding Lectin Gene from Bulbs of Amaryllis vittata (Amaryllidaceae) THE FIBRILLAR INCLUSIONS IN THE VEGETATIVE NUCLEUS OF AMARYLLIS POLLEN TUBE * Positional Shift Between the Vegetative Nucleus and the Generative Cell in Amaryllis Pollen Tube