M. M. Jowkar, H. Salehi,
Volume 10, Issue 3 (10-2006)
Abstract
Tuberose is one of the tropical and subtropical bulbous cut flowers cultivated extensively in most floricultural regions of Iran. Although it has a high potential for a long vase life after harvest, tuberose declines rapidly at home. In order to overcome this problem, two experiments were conducted on a local cultivar, “Goldorosht-e-Mahalat”, using a completely randomized design. To find a suitable preservative which provides the longest vase life for tuberose, the experiment was carried out by applying the carelessness of most consumers: not recutting stem ends nor changing the vase solutions. In the first experiment the preservative solutions were: sucrose (1, 2 and 3%), silver thiosulphate (0.4, 0.8 and 1.2 mM), silver nitrate (50, 100 and 150 mgl-1), citric acid (150, 300 and 450 mgl-1) and tap water as the control. In the early days of the experiment, silver thiosulphate caused severe burning of the florets, silver nitrate caused the wilting of the florets and bent the end of the flower spikes and sucrose didn’t have any positive effect, but decreased the vase life. The longest vase life belonged to citric acid, after which the control (tap water) was placed. The second experiment was conducted to determine the role of the water quality and citric acid. The treatments were: sterilized distilled water, citric acid made with sterilized distilled water (150, 300 and 450 mgl-1) and tap water as the control. The longest and the shortest vase life belonged to sterilized distilled water and the control (tap water) respectively. The citric acid prepared with sterilized distilled water had a desirable effect on the vase life of cut tuberose flowers. This effect increased with the increment of the acid up to 450 mgl-1.
M. Karimi, M. Hassanpour Asil, H. Samizadeh Lahiji, S. Talesh Sasani,
Volume 12, Issue 43 (4-2008)
Abstract
Experiments were conducted to study the effects of temperature and chemical treatments on the vase life of cut Asiatic hybrid lily cultivar Pisa, with sixteen chemical treatments using factorial design with 3 replication arrangements. Lilium cut flowers were harvested when the first flower colored fully. Following chemical treatments, they were grouped in different combinations before storage. The treatments included sucrose, 8- hydroxy quinoline sulfate (HQS), citric acid (CA), gibberellic acid (GA3), kinetine (KI) and distilled water as control. Lilium cut flowers were pulsed for 24 hours in different solutions, then brought out and kept in the distilled water at temperatures of 4°C and 22 ° C .Effects of applied treatments were evaluated on different characteristics like vase life, the amount of water absorbed, flower diameter, total soluble solids and fresh weight. Results showed that the temperature of 4°C had the most effect on vase life, keeping the quality of lilium cut flowers. The results also displayed that the chemical treatments kinetine + sucrose had the most effect on vase life and percentage of sucrose, gibberellic acid + kinetine delayed yellowing of the foliage, 8- hydroxy quinoline absorbed the most amount of water, and treatments sucrose + kinetine , gibberellic acid + 8- hydroxy quinoline sulfate and gibberellic acid + citric acid were most effective in increasing the flowers diameter.
