Effect of Gibberellic Acid Pulsing and Sucrose Continuous Treatment on Some Qualitative Characteristics of Cut Rose Flower cv. Velvet
الموضوعات : مجله گیاهان زینتی
Zahra Ahmadi
1
(Graduated student of MSc. degree of Horticultural Sciences, Faculty of Agriculture, University of Tabriz.)
Rahim Naghshiband Hassani
2
(Assistant Professor, Department of Horticulture Sciences, Faculty of Agriculture, University of Tabriz)
الکلمات المفتاحية: Vase life, plant growth regulators, Carbohydrate, Cut rose, water uptake,
ملخص المقالة :
The aim of this study was the better assessment of the relationship ofpulsing treatment of gibberellic acid as an anti-senescence agent and holdingin sucrose as a carbohydrate supply resource on improving some qualitativeand physiological attributes of cut rose flower cv. Velvet. Hence, anexperiment involving the pulsing treatment with gibberllic acid (GA3) at 0,20, 40 and 60 mg L-1, for 24 hours, and holding them in sucrose at 0, 2 and3% with 250 mg L-1 of 8- HQS as an antimicrobial agent for all holdingtreatments was conducted. The study was performed as a factorial experimentbased on a randomized completely design (RCD) with three replication foreach combination treatment. Applying GA3 pulse treatment alone at all concentrationsincreased significantly vase life and its effect enhanced withsucrose holding at 2 and 3% compared with control. The effect of GA3pulsing in increasing of stem relative fresh weight (RFW) and solutionuptake (SU) was hastened by sucrose holding treatment at 2 and 3%.Highest amount of flower opening and petal water content during vase lifeperiod was observed in 60 mg L-1 of GA3 pulsing and sucrose 3% holdingtreatment which had been longer flower diameters and greater petals.Gibberellic acid pulsing alone and along with sucrose holding treatment atall concentrations caused to prevention of leaf chlorophyll degradationcompared with control. In conclusion, GA3 pulsing at 40 mg L-1 along withsucrose 2% holding treatment had a significant effect on improving vase lifeand other qualitative attributes of cut rose flower cv. Velvet.
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