ISHS Acta Horticulturae 755: International Conference on Quality Management in Supply Chains of Ornamentals
EFFECT OF THIDIAZURON PULSING ON PHYSIOLOGICAL CHANGES OF CUT TUBEROSE FLOWER (POLIANTHES TUBEROSE L.) |
| Authors: | A. Uthairatanakij, J. Jeenbuntug, M. Buanong, S. Kanlayanarat |
| Keywords: | bud opening, ethylene production, opened flower, respiration rate, vase life |
| Abstract:
The objective of this study was to investigate the physiological changes of cut tuberose (Polianthes tuberose L.) flower pulsed with various concentrations of thidiazuron (TDZ). Flowers were pulsed with 20% of sucrose only or combined with TDZ at 10, 20 or 50 µM for 12 h at 20°C. Distilled water was used as control treatment. Pulsed flowers were displayed at 20°C. The result showed that not only sucrose but also sucrose combined with TDZ significantly induced percentage of bud opening. Respiration rate of flower pulsed with higher concentrations of TDZ was lower than control treatments. But pulsing had no effect on ethylene production. Therefore, the vase life of all TDZ pulsing treatments was 5.5, 5.7 and 6.0 days, respectively. Whilst, flower pulsed with distilled water or sucrose 20% had significant the shortest vase life (4.9 and 4.8 days, respectively). | |
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