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Terpenoids, the most abundant and structurally diverse class of plant secondary metabolites, play an important role in plants. With the purpose of obtaining new and better chemical preservatives, the present study investigated the effects of geranyl diphosphate (GDP), a precursor of terpenoids. | Turkish Journal of Agriculture and Forestry http://journals.tubitak.gov.tr/agriculture/ Research Article Turk J Agric For (2013) 37: 45-51 © TÜBİTAK doi:10.3906/tar-1202-19 The promoted longevity of gerbera cut flowers using geranyl diphosphate and its analog 1, 2 3 Zahra ORAGHI ARDEBILI *, Vahid ABDOSSI , Rosa ZARGARANI , Narges ORAGHI ARDEBILI 1 Department of Biology, Garmsar Branch, Islamic Azad University, Garmsar, Iran 2 Department of Horticulture, Science and Research Branch, Islamic Azad University, Tehran, Iran 3 Department of Agriculture, Garmsar Branch, Islamic Azad University, Garmsar, Iran Received: 08.02.2012 Accepted: 10.07.2012 Published Online: 15.01.2013 1 Printed: 15.02.2013 Abstract: Terpenoids, the most abundant and structurally diverse class of plant secondary metabolites, play an important role in plants. With the purpose of obtaining new and better chemical preservatives, the present study investigated the effects of geranyl diphosphate (GDP), a precursor of terpenoids, and its analog on the vase life of cut flower gerbera. GDP and its analog were used in 5 different concentrations (0, 25, 50, 100, and 200 mg L–1). Flowers were grouped into 9 different treatment groups: control (C), G25, G50, G100, G200, A25, A50, A100, and A200. The application of geranyl diphosphate and its analog resulted in increased solution uptake, fresh weight, soluble solids, membrane stability, and longevity of cut flowers and alleviated stem bending with the best observed results in the A100, A200, A50, and G100 treatment groups. According to the results, the present research indicated that GDP and its analog, and especially its analog, may promote the longevity of cut flowers via increased solution uptake, soluble solids, fresh weight, and membrane stability and alleviated stem bending. Key words: Geranyl diphosphate, gerbera, monoterpenes, ornamental, postharvest, terpenoids 1. Introduction Gerbera, a member of the Asteraceae family, is a .
