Effect of Floral Solutions on Keeping Quality of Cut Roses (Rosa hybrida L,) First Red
M. P. Jayatilleke and J. Balas
Program and Abstract. Australasian Postharvest Horticulture Conference. Royal Lakeside Novote., Rotorua, New Zealand. 27-30 September 2005. July 5-10, 2005. Page 42
2005
บทคัดย่อ
Effect of Floral Solutions on Keeping Quality of Cut Roses (Rosa hybrida L,) First Red
Fresh floral preservativesare chemicals added to water to make flowers last longer. They contain a germicide; a food Source, a pH adjuster, water and sometimessurfactants and hormones. Introduced international vase solutions, Ottawa Solution and Standard Vase Solution, commercial floral preservatives, Chrysal clearÒ , Flower freshÒ, Flora 2000Ò and BiovinÒ , and germicides, 8-HQS and CuSO4were testedon keeping quality of cut roses (Rosa hybrida L.,`First Red'). Compounds were evaluated for their effectson vase life, maximum weight gain in fresh weight, solution uptake rate, pH, conductivity and redox potential of vase solution during the vase life period. Longer vase life and higher gain in fresh weight of roses were observed with Ottawa Solution than commercial floral 'preservatives and 8-HQS. CuSO4 was ineffective in gaining fresh weight and increasing vase life. Variation of pH, conductivity and redox potential did not show a specific pattern in this respect. Redox potential values and conductivity values on the rose data indicated that the best were the average values of Ottawa solution during 2-4 days for keeping quality. It gave lower values for both redox potential and conductivity at the end of vase life for the Ottawa solution. Maintenance of pH around 4 showed better keeping quality performances for roses. Increase and maintenance of fresh weight and longer vase life were observed with rose flower stems placed in Ottawa solution, 8-HQS and commercial floral preservatives (Chrysal clearÒ, Flora 2000Ò, Flower freshTM).