S-carvone as a potential vase solution component
J.W. Damunupola, T. Qian, R. Muusers, D.C. Joyce, D.E. Irving, U. Van Meeteren
Program and Abstract. 2007 Australasian Postharvest Conference. Crowne Plaza Terrigal, NSW, Australia. 12 September 2007. 87 p.
2007
บทคัดย่อ
Wilting characterises the end of vase life for many cut-flower and foliage lines. Insufficient water uptake is often due to stem-end blockage and/or poor stem hydraulic conductance that involve wound healing and/or microbial growth. Treatment of plant tissues with S-carvone can inhibit the synthesis of wound healing compounds. S-carvone also has antimicrobial activity. Provision of S-carvone in the vase water has been shown to extend the vase life of flowering Hakea francisiana and Grevillea 'Crimson Yukio' stems (Proteaceae). While it was suggested that S-carvone acted as a wound response inhibitor, its potential antimicrobial action warrants examination in a vase solution context. S-Carvone was tested for activity against vase solution bacteria in vitro (agar well diffusion assay) and in a vase solution experiment. Also, Scarvone was evaluated as a vase solution ingredient for the non-Proteaceous cut-flower and foliage lines of Acacia holosericea, Baeckea sp., Chamelaucium uncinatum cv. 'Mullering Brook' and Chrysanthemum sp. cv. 'Dark Splendid Reagan'. S-carvone tested at concentrations effective for the two Proteaceae species (0.318 and 0.636 mM) did not suppress bacterial populations in the vase solution. Moreover, there was no in vitro activity at these concentrations against Bacillus cereus, the predominant bacterium in A. holosericea vase water. S-carvone at both concentrations had significant (P < 0.05) positive effects on relative fresh weight maintenance and on vase life of Baeckea sp. However, there were no such effects for A. holosericea, C. uncinatum or Chrysanthemum sp.