doi:10.1071/EA04127

Vase treatments containing gibberellic acid do not increase longevity of cut Grevillea ‘Sylvia’ inflorescences

Setyadjit ^A ^B, D. E. Irving ^A ^C, D. C. Joyce ^A, D. H. Simons ^A

^A Centre for Native Floriculture, School of Agronomy and Horticulture, The University of Queensland, Gatton, Qld 4343, Australia.
^B Indonesian Agriculture Postharvest Technology Research Institute, JL. Ragunan 29A, Pasarminggu, Jak-Sel, Indonesia.
^C Corresponding author. Email: d.irving@uq.edu.au





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Australian Journal of Experimental Agriculture 46(11) 1535–1539 http://dx.doi.org/10.1071/EA04127
Submitted: 26 November 2004 Accepted: 24 January 2005 Published online: 9 October 2006

Abstract

The longevity of Grevillea ‘Sylvia’ inflorescences can be very short and is influenced by exposure to ethylene. Gibberellic acid has the potential to delay senescence in some cut flowers by acting as an anti-ethylene treatment. Gibberellic acid was therefore applied to Grevillea ‘Sylvia’ inflorescences in vase solutions to determine its effects on longevity. Treatments with gibberellic acid did not prolong the longevity of inflorescences or influence 1-aminocyclopropane-1-carboxylic acid concentrations. Treatments at high gibberellic acid concentrations enhanced flower abscission and we therefore conclude that vase-applied gibberellic acid treatments are not suitable for extending the longevity of cut Grevillea ‘Sylvia’ inflorescences.

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