Response of cut rose cv. cardinal to sucrose and NaOCl concentration

Malik Owais Ullah Awan

doi:10.19045/bspab.2017.60011

Abstract

To find the response of cut rose cv. Cardinal to sucrose and NaOCl concentration, an experiment was conducted with normal day light under room condition and natural ventilation. Completely Randomized Design (CRD) was used for the experiment by replicating 3 times. Solutions of different combination of Sucrose levels of 0, 4, 8 and 12% and sodium hypochlorite with 0 (control), 5, 10 and 15 mgL-1 concentrations were applied to the cut rose cv. Cardinal. By analyzing of data collected, illustrated that cut rose cv. Cardinal significantly responded to sucrose and NaOCl levels. Combination of 15 mgl-l NaOCl with 12% sucrose was found more favorable for the whole studied parameters. Early flower opening (4 days), maximum flower fresh weight (12.30g), flower size (6.01 cm), maximum flower longevity (16 days) and and dry weight (3.78) were observed for cut rose retained in solution mixture of 12% sucrose and 15 mgL-1 NaOCl. The solution containing 12% Sucrose and 15 mgL-1 NaOCl significantly increased (12.30 g) flower fresh weight. Less percent petal drop (10%) was observed by solution containing combination of 12% sucrose and 15 mgL-1 NaOCl as compared to control (33.80 %). As for sugar application individually on cut rose, early flower opening took place (4 days), maximum flower size (6.14 cm), flower fresh weight (11.57g), minimum flower wilting (15.58%), maximum flower dry weight (3.78 g), minimum petal drop (23.96 %) and longer vase life (3.39 days) were observed for 12 % sugar solution. For NaOCl application individualy, the cut rose showed early flower opening took place (4 days), maximum flower size (6.16 cm), maximum flower fresh weight (11.27g), minimum flower wilting (15%), maximum dry weight (4.13 g), minimum petal drop (18.75 %) and longer vase life (14.77) were observed for 15 mg.l-1 of NaOCl solution In general, 15 mg.l-1NaOCl and 12 % sucrose is considered a best solution combination to be used for cut rose flowers cv. cardinal longer and quality vase life. Key words: Cut Rose; Sucrose; NaOCl http://dx.doi.org/10.19045/bspab.2017.60011

Highlights

The significance of cut flower production globally increased after World War II due to improvement in the cut flower production
The mean data clearly show that late flower opening (5.16) days were recorded for flower supplied with 0 mgL-1 sodium hypochlorite, followed by average flower opening (5.01) days for NaOCl at 5mg.L-1 while early flower opening (4.32) days were recorded by flower interacted with 15 mg.L-1 NaOCl solution
The data for sucrose solution showed that 8% Sucrose Solution resulted early flower opening (4.27) days, followed by flower opening (4.71) days for 4% sucrose solution while late flower opening (5.23) days were obtained from flower supplied with distilled water i.e. control treatment

Summary

Introduction

The significance of cut flower production globally increased after World War II due to improvement in the cut flower production. Natural growth of Daffodil and Narcissus in Swat and Abbottabad provides opportunity for cut rose trade in the Province due increase in demand of Daffodils and Narcissus across the country. The vase life of cut flowers can be prolonged by use of environmental conditions, sucrose solution, sodium hypochlorite and silver thiosulphate solution [8]. Chlorine is used to inhibit growth of bacteria and fungi in cut flower vase solutions. The socioeconomic value of roses and its esteem as a cut flower give among the people compel us to explore the potential of extending vase life by using various preservatives. Flowers harvested at the morning in loose bud stage by giving a slant cut having 20 cm stalk and immersed it in buckets containing simple water in upright position. The stems were re-cut by giving a slant cut, removing 5 cm, and the stem length was kept 15 cm in order to remove air emboli to prevent blockage of xylem vessels due to air bubbles accumulation

Preparation of Sucrose solution

Treatment combination

Results and discussion

NaOCl and Sucrose

Ethylene production is main factor in Petal