The effect of treatments to prevent coagulation of the milky substance at the base of the inflorescence, the perfusion, the preservation of the inflorescences in a vase on the life of the cut dahlia inflorescences and the loss in their fresh weight
Keywords:
أزهار القطف, كحول الايثانول, التداولAbstract
A laboratory experiment was conducted in the laboratory of the Department of Horticulture at the Faculty of Agriculture in Al-Bayda - Omar Al-Mukhtar University for two agricultural seasons, with the aim of prolonging the life of the plucked dahlia inflorescences) Dahlia hybrid(, "Lady Tweedsmuir" variety, while maintaining their quality. The experiment included 48 treatments, represented by three treatments to prevent the milky substance from clotting at the base of the inflorescences, four treatments for pulsation, and four treatments for preserving the inflorescences in the vase. The treatment of dipping the bases of the inflorescences in ethanol alcohol (95%) significantly extended the life of the dahlia inflorescences compared to the control other treatments. Dipping the bases of the inflorescences in STS or 8-HQS solutions was associated with a significant prolongation in the life of the inflorescences in the vase with no significant difference in the second season, compared to the treatment of GA and the control, which did not differ significantly in their effect on the life of the inflorescences in the vase. Finally, all preservation solutions led to a significant increase in the age of the inflorescences in the flower compared to the control.
References
References:
AbdEl-Kader, H.H., Hussein, A.A.,&El-Hindi, K.M.H. (2004a). Postharvest studies on the cut flowers of Dahlia (Dahlia hybrida, L.) I. Effects of preventing latex flow, pulsing and holding solutions on flower water relations and the anatomical structure of the flower and stem. J. Agric. Sci. Mansoura Univ., 29(6), 3389-3408.
AbdEl-Kader, H.H., Hussein, A.A.,& El-Hindi, K.M.H. (2004b). Postharvest studies on the cut flower of Dahlia (Dahlia hybrida L.). II. Effect of preventing latex flow, pulsing, and holding solutions on vase life and quality. J. Agric. Sci Mansoura Univ., 29(6), 3409-3423.
Barbosa, J.G.,Medeiros, A.R.S., Finger,F.L., Reis, F.P.,Alvares, V.S.,&Barbosa, M.S. (2006). Longevity of lily inflorescences harvested at different stages of development and pulsed with sucrose and silverthiosulfate (STS). Ciencia-Rural, 36(1), 99-104.
De Hertogh. A.A. (1990). Basic criteria for selecting flower bulbs for North American markets – gardens, outdoor cut flowers, forced cut flowers, and potted plants. North Carolina Hort. Res. Serv. Bull., 85. Raleigh, North Carolina.
El-Hassia, E.B. (2007). Efficiency of N, K, fertilizer and foliar spray with paclobutrazol, and gibberellin on growth, flowering and tuberous-root production of Dahlia hybrida plants. M. Sc. Thesis, Fac. Agric. Omer El-Mokhtar Univ. (in Arabic with English Summary).
El-Saka, Magda, M. (1986). Studies on the post-harvest physiology of some cut flowers. M.Sc.Thesis, Fac . Agric., Zagazig Univ., Egypt.
Freyermuth, T.,Holcomb, E.J.,& Evensen,K. (1984). Postharvest notes cut poinsettia. Pennsylvana flower growers, Bulletin 353, Third issue.
Gordon, J.,Evensen, K.,&Holcomb, E.J. (1986). Alcohol pretreatment of cut poinsettias. HortScience, 21(5), 267-273.
Gorin, N., Staby, G.L., Klap,W., Tipper, N.,&Luvssing, D.L. (1985). Quality measurements of carnation treatment solutions in relation to flower silver distribution and longevity. J. Amer. Soc. Hort. Sci., 110, 117-123.
Hardenburg, R.E., Watada, A.E.,&Wang, C.Y. (1986). The commercial storage of fruits, vegetables, andflorist and nursery stocks. USDA, Agric. Handbook No. 66 (revised).
Hassan, F., &Schmidt, G. (2004). Post-harvest characteristics of cut carnations as the result of chemical treatments. Acta Agronomica, 52(2), 125-132.
Hassan, F.A.S., El-laban, H.M.,&Fetouh, M.I. (2008). Effect of gibberellic acid (GA3) on growth, floweing and keeping flowers quality of Strelitziareginae Ait. Plant. Proc.1st Int. Sci .Conf. Orn. Alexandria, Egypt. Alex .J. Agric. Special Issue, 53(1), 183-189.
Lukaszewska, A.J. (1980). Effect of some chemicals on cut dahlia flowers. Acta Hort., 109, 241-246.
Nowak, J. (1985). The response of cut flowers to inhibitors of ethylene action. Acta Hort., 167, 125-139.
Nowak, J. &Rudnicki, R.M. (1990). Postharvest Handling and Storage of Cut Flowers, Florist Greens, and Potted Plant .Chapman and Hall London, New York. Tokyo. Melbourne. Madras. 210 pp.
Pamela, C.,&Richard, A. H. (1994). Lippincotts illustrated. Reviews Biochemistry 2nd edition. J.B. Lippincott Company Philodelphia, USA. PP. 443.
Paulin, A. (1980). Effect of water stress on the glucid metabolism and the water balance of cut carnations. Acta Hort., 113, 119-125.
Redman, P.B., Dole, J.M., Maness, N.O., &Anderson, J.A. (2002). Postharvest handling of nine specialty cut flower species. Scientia Hort., 92(3/4), 293-303.
Saka, M. M.,Moawed,A.A.,Awad, A.E.,&Sadek, O.A. (2002). Effect of pulsing solutions, simulate transport and holding solution on keeping quality of Gypsophila panculata, L. cv.''Perfecta'' cut flowers. J. Agric. Sci. Mansoura Univ., 27(11), 7623-7636.
Snedecor, C.W.,&Cochran, W.G. (1980). Statistical Methods, 7th ed. Iowa State Univ., Press, Ames. Iowa, U.S.A.
Steintz, B. (1982). "The role of sucrose in stabilization of cut gerbera flower stalks". Gartenbauwissenschaft, 47(2): 77-81. Valcami Centre, Be Dagan, Israel (Hort. Abst., 52(8), 528).
Stimart, D.P.,&Brown, D.J. (1982). Regulation of postharvest flower senescence in Zinnia elegans Jacq. Scientia Hort., 17, 391-396.
Van Staden, J.,&Dimall, G.G. (1980). The effect of silver thiosulphate preservative on the physiology of cut carnation. II. Influence on endogenous cytokinins. Zeitschrift fur Pflanzenphysiologic, 99(1), 19-26 (Hort. Abst., 51: 4722).
Vinga, R., Devecchi, M., &Accati, E. (1999). Keeping quality of flowering stems of broom. Colture-Prolette, 28(1), 77-82.
Whitehead, C.S.,Reilly,L.O., Weerts, J., Zaayman, M.M., &Gaum, W. (2003). The effect of sucrose pulsing on senescing climacteric cut flowers. Acta Hort., 599, 549-557.
