Abstract:

A comparison of anatomical structures of stems was made between neck-bending cultivar ‘Yidianhong’ and neck-bending resistant cultivar ‘Hongditan’ in Gerbera hybrida by applying paraffin and SEM. Results showed that ‘Hongditan’ was characterized with more cortex thickness, vascular area, vessels number and diameter in stem than ‘Yidianhong’, For ‘Hongditan’, the vascular bundle were ranked compactly in three different section of stem. Significant difference was detected in vessels diameter between upper section and midder sections with lower sections, and it had extremely significant difference in vascular area. By contrary, litter vessels were disappeared in middle and upper section in the stem of ‘Yidianhong’. The distance between the vascular bundles was wide, and had extremely significant difference in vascular area between lower section. Extremly significant difference was found in vessels diameter between upper section and midder section with lower section. Therefore, the key points of longer vase life of gerbera were more cortex thickness, compactly bigger vascular bundles and more widely vessels.