Effects of Sucrose, Thidiazuron, and Benzyladenin on the Vase Life and Quality of ‘TOC Red’ Mokara Inflorescence.
Lan Khanh Phan Thi
Master of Science (Postharvest Technology), Faculty of School of Bioresources and Technology, King Mongkut's University of Technology Thonburi. 102 p. 2006.
2006
บทคัดย่อ
Effects of Sucrose, Thidiazuron, and Benzyladenin on the Vase Life and Quality of ‘TOC Red’ Mokara Inflorescence.Mokara orchids (Arachins x Ascocentrumx Vanda) have potential as specially cut flowers, but the data apparently reported on the postharvest physiology of Mokarainflorescence has not been yet defined. ‘TOC Red’ Mokarainflorescences were used in this study. Effects of different concentrations of 1, 5, 10% sucrose only or combined with 250 mg/L 8-HQS + 30 mg/L AgNO3on cut flowers of ‘TOC Red’ Mokarainflorescence were studied. The results showed that flowers held in 10% sucrose + 250 mg/L 8-HQS + 30 mg/L AgNO3 showed the longest vase life of 16.3 days, while control flowers held in distilled water had vase life of 14.1 days. Effects of thidiazuron (TDZ) concentrations on quality of Mokarainflorescences were observed. Inflorescences were pulsed with 0, 1, 5, 10, and 50 µM TDZ for 2 h and held in centrifuge tubes containing distilled water and displayed at 20ºC with 65% relative humidity. The results showed that flowers treated with 1µM TDZ had the longest vase life up to 24.8 days. However, using 50 µM TDZ resulted in an increase of floret wilting and a reduction of vase life.
Comparison of effects of TDZ and BA on vase life and quality of ‘TOC Red’ Mokarainflorescence indicated that flowers pulsed with TDZ gave the best results than flowers pulsed with BA. While flowers pulsed with high concentration of TDZ and BA caused floret wilting and dropping, respectively and reduced vase life. TDZ at low concentrations performed like cytokinin activity and improved overall postharvest quality and longevity in ‘TOC Red’ Mokara inflorescence (24 days compared to 17 days of untreated flowers).