Effects of ethylene on volatile emission and fragrance in cut roses: The relationship between fragrance and vase life |
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| Authors: | Ana Maria Borda David G Clark Donald J Huber Bruce A Welt Terril A Nell |
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| Institution: | 1. Department of Environmental Horticulture, PO Box 110670, University of Florida, Gainesville, FL 32611, USA;2. Horticultural Science Department, PO Box 110690, University of Florida, Gainesville, FL 32611-0690, USA;3. Agricultural and Biological Engineering, PO Box 110570, University of Florida, Gainesville, FL 32611, USA;1. Université d’Orléans, Institut de Chimie Organique et Analytique, UMR 7311, rue de Chartres, 45067 Orléans cedex 2, France;2. LVMH recherche, département Innovation Ethnobotanique, 185 avenue de Verdun, 45800 Saint-Jean-de-Braye, France;1. Department of Horticultural Sciences, Tarbiat Modares University, Tehran, Iran;2. Department of Agricultural Biotechnology, Tarbiat Modares University, Tehran, Iran;3. Research Institute of Forests and Rangelands, Tehran, Iran;1. Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, Japan;2. Japan Society for the Promotion of Science, Japan;3. College of Bioscience and Biotechnology, Chubu University, Kasugai 487-8501, Japan;1. Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Caixa postal 354, CEP 96010-900M Capão do Leão, RS, Brazil;2. Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Estação Experimental de São Joaquim, Rua João Araújo Lima, 102, CEP 88600-000, São Joaquim, SC, Brazil;3. Rua José de Souza Borges, 27, São Joaquim, SC, Brazil;4. Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina, Avenida Luiz de Camões, 2090, CEP 88520-000, Lages, SC, Brazil;5. Michigan State University, Department of Horticulture, 1066 Bogue Street, East Lansing, MI, 48824, USA;1. Department of Horticultural Sciences, Tarbiat Modares University, Tehran, Iran;2. Department of Agricultural Biotechnology, Tarbiat Modares University, Tehran, Iran |
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| Abstract: | The relationship between fragrance and vase life and the role of ethylene on volatile emission in cut rose flowers was investigated. No relationship was observed between the amounts of volatile compounds emitted and vase life when fragrant and non-fragrant rose cultivars were compared. Neither ethylene production nor respiration rate of flowers was directly related with vase life. Volatile production during vase life was differential and independent among volatiles originating from different biosynthetic groups. Ethylene did not play a role in the regulation of volatile emission in rose flowers. Endogenous ethylene production was very low in most of the cultivars and did not show autocatalytic production trends. Volatile emission patterns during vase life did not parallel endogenous ethylene production. Exogenous ethylene exposure had differential effects among all cultivars, regardless of the fragrance of the flower. Fragrant cultivar ‘Osiana’ was highly sensitive to exogenous ethylene, with petals abscising within 24 h of ethylene (1 μL L?1) exposure while other fragrant cultivars ‘Erin’ and ‘Lovely Dream’ had low ethylene sensitivity. Volatile production was unaffected by exogenous ethylene. The results of this study indicate that volatile emission in cut roses is not regulated by endogenous or exogenous ethylene and occurs independently of petal senescence and/or abscission. These results provide a better understanding of the complexity of volatile emission in rose flowers. |
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