Gibberellic Acid (GA3) and Potassium Nitrate (KNO3): The Influence and Interaction inThe Senescence Process in White Rosa Sp.
The purpose of this study was to find out whether the combination of KNO3 and GA3 solutions were more effective than a single solution of KNO3 or GA3 in keeping the freshness of cut flowers. The research was conducted in Botanical Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences University of Lampung from November to December 2017. The experiment was conducted in 2 x 3 factorial experiment with factor A is GA3 solution with 3 concentration level: 0% w/v, 25% w/v, and 0.5% w/v. Factor B is KNO3 solution with 2 concentration levels: 0% w/v and 5% w/v. The parameters of this study were fresh weight, dry weight, relative water content, total chlorophyll content, total chlorophyll of leaves, and total carbohydrate content of rose cut flowers. Measurements were made 7 days after the immersion of cut flowers in KNO3 or GA3 solution, and mixed both. Homogeneity of variance and analysis of variance is determined at confidence level 5%. KNO3 simple effect at every level of GA3 concentration is determined by the F test at 5%. The results showed that there was no interaction between GA3 and KNO3 to fresh weight, dry weight, relative water content and chlorophyll content a, b and total white roses, but KNO3 reduced fresh weight of cut flowers by 48.15% and dry weight 58.60%. KNO3 increased the relative water content of white rose flowers by 6.85%. The results of the study concluded that the combination of GA3 and KNO3 is not effective to keep the freshness of white rose flowers cut.
Asadi, K., Abdoosi, V., Mousavi, E. S. dan Abdali, A. (2014). Evaluation the effect of sucrose and GA3, treatment on vase life carnation cut flower (Dianthus caryophyilus var. Yellow). Pelagia Research Library, 5(6), 150-154.
Celikel, F.G., Reid, M.S. (2002). Protharvest handllling of stock (Matthiola incana), HorSci., 37, 144-147.
Danaee, E., Mostofi, Y., Moradi, P. (2011). Effect of GA3 and BA on postharvest quality and vase life of gerbera (Gerbera jamesonii. cv. Good Timing) cut flowers. Horticulture, Environment, and Biotechnology, 52(2),140-144.
Emongor, V.E. (2004). Effect of GA3 on postharvest quality and vase life of gerbera cut flowers. J. Argon., 3, 191-195.
Eason, J. R. (2002). Sandersonia aurantiaca: an evaluation of postharvest pulsing solutions to maximise cut flower quality. New Zealand Journal Of Crop and Holticultural Science, 30(4), 273-279.
Gan, S., dan Amasino, R. M. (1995). Inhibition of leaf senescence by autoregulated production of cytokinin. Science, 270 (5244), 1986-1988.
Jordi, W., Stoopen G. M., Kelepouris, K., Van Der Krieken W. M. (1995). Gibberelellin-induced delay of leaf senescence of Alstroemeria cut flowering stems is not caused by an increase in the endogenous cytokinin content. J. Plant Growth Regul., 14, 121-127.
Rina. (2009). Penjelasan bunga mawar dan kesegaran bungan mawar (Rosa Sp). Jurnal Pertanian, 1, 404-410.
Srivastava, V.M. (2002). Plant Growth and Development. Canada : Academic Press.
Wintermans, J. F. G. M & De Mots, A. (1965). Spectrophotometric characteristics of Chlorophylls a and b their pheophytins in etanol. Biochimia Biophysica Acta, 109, 448-453.
Witham, D dan Robert, M. (1993). Exercise in Plant Physiology Second Edition. Boston: Prindle, Weber & Scimdt.
Wood, A., dan Pleg, L.G. (1974). Alteration of liposomal membrane fluidilty by gibberellic acid. Functional Plant Biology Volume 1(1), 31-40.
Yamasaki, S. and Dillenburg, L.R. (1999). Measurements of lear relative water content in Araucaria angusitifolia. Revista Brarleira de Fisiologis Vegetal. 11(2), 69-7
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