STUDIES ON SOME FACTORS AFFECTING THE VASE LIFE AND QUALITY OF THE CUT FOWERS OF CARNATION (Dianthus caryophyl/us L.) AND ROSE (Rosa hybrida L.). | ||||
| Journal of Plant Production | ||||
| Article 9, Volume 29, Issue 2, February 2004, Page 815-824 PDF (1.48 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2004.238511 | ||||
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| Author | ||||
| H. H. Abdel-Kader, | ||||
| Veget. and Flor. Dept., Fac. of Agric., M- nsoura Univ. | ||||
| Abstract | ||||
| Two experiments were carried out on "White Sim" standard carnation and "Dallas" roses, in order to study the effects of ethanol, as an anti-ethylene agent, in comparison to silver salts on the vase life and quality of the cut flowers in the presence or absence of external ethylene source. The experiments were conducted at the Dept. of Plant Production, College of Agric., King Saud University, Saudi Arabia durin; the two successive seasons 1995 and 1996. Within each season, carnation experiment was conducted twice on 1st of March and 151 of April, and, rose experiment on 151 of May and 151 of June in each year. Flowers were placed in eiher deionized distilled water, 4% ethanol, 6% ethanol, 1 mM silver nitrate, and 1 mM silver thiosulfate (STS) solutions containing zero or 50 ppm ethephon. Flowers were placed inside fully controlled growth chambers under standard conditions of 20°C, 16 hours of 2000 lux fluorescent light, 60 - 70 % relative humidity, and continuous air circulation of low velocity. Data were collected on vase life, fresh weight gain, and average daily solution uptake of the flower. The results showed that, in the absence of ethephon from the solution, all chemicals improved vase life and quality of both carnation and roses compared with the 01 water. In the absence of etbephon, silver nitrate solution gave best results of vase life, maximum weight ga n, and solution uptake for both carnation and roses. STS solution rankec second, followed by 6% ethanol, while 4% ethanol' ranked fourth in descending order for all previous measurements. The results also showed that the presence of ethephon in the solution reduced vase life and quality of both carnation and roses, and it was observed that carnation was more affected by ethephon than roses. In the presence of 50 ppm ethephon in the solution, all chemic" Is improved vase life of cut roses in comparison with 01 water containing ethe-ohon, while STS and 6% ethanol were the only two chemicals that improvec vase life of cut carnation. In addition, in the presence of ethephon in Ihe solution, STS was the best chemical, followed by 6% ethanol for both "White Sim" carnation and "Dallas" roses. In this respect, it was concluded that in the absence of external ethylene, at least a part of cut carnation and rose senescence is caused by the effect of internal ethylene produced by the flower issue. Ethanol is a promising chemical that could be used in flower preservative solutions as an anti-ethylene agent, but further studies are needed before giving recommendations for optimum concentration that could be used for cifferent cut flowers. | ||||
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