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Effect of Sucrose and Ph on the Vase Life of Gladiolus Flower

F.N. Khan
Senior Scientific Officer
Floriculture Division, HRC, BARI, Gazipur, Bangladesh

L. Yasmin
Scientific Officer
Plant Pathology Section, HRC, BARI, Gazipur, Bangladesh

T.A.A. Nasrin
Scientific Officer
Post Harvest Section, HRC, BARI, Gazipur, Bangladesh

M.J. Hossain
Principal Scientific Officer
Tissue culture Lab, HRC, BARI, Gazipur, Bangladesh

P.C. Golder
Principal Scientific Officer
BARC, Dhaka, Bangladesh

Abstract/ Executive Summary:

A study was conducted at the Floriculture Laboratory, Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI) in two consecutive seasons, March, 2003 and 2004 to determine the optimum level of sucrose concentration and pH to extend the vase life of gladiolus flower. Larger flower (6.44 cm) had the maximum vase life (8.23 days) and no infection (0%) of vase solution at pH 3.0. Moreover, at this pH 3.0, each flower stick absorbed maximum water (48.9 g) and 87.5% florets were fully opened. The highest percentage (88.8%) of florets was opened in 4.5% sucrose solution which was statistically similar to 1.5% and 3.0% sucrose solutions. The lowest infection percentage (1.91%) was observed in 4.5% sucrose solution. Flowers in 3.0% sucrose solution took maximum days to 50% florets senescence (8.47 days) which was statistically identical to 4.5% sucrose solution. Low pH coupled with 3.0% sucrose solution showed the highest percentage of floret opening (91.4%) which was statistically similar to low pH with 4.5% (89.0%) and 1.5% (88.7%) sucrose solutions. Poor performance was observed for the vase solution having high pH (7.0) and without sucrose.

Keywords: Gladiolus, Vase life, Sucrose, PH

Location: Floriculture Laboratory, Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI)

Start Date: 00-00-2003

End Date: 00-00-2004

Program Area: Resource Development and Management

Commodity: Gladiolus, Self life

Objectives:

Exogenous application of sugars and hormones in vase solution or pulse solution retained and prolonged quality of roses and carnation cut flowers (Acock and Nichols, 1979; Marousky, 1969). Further, water uptake increases with the reducing pH of the solution. Another advantage of low pH is the reduction of pathogen development (Nell & Reid, 2000). The source of energy associated with low pH may be beneficial for extending the vase life of gladiolus flowers. A systematic research result for extending the vase life of gladiolus is scanty. So, the experiment was undertaken to determine the optimum sucrose concentration and pH for extending the vase life of the gladiolus flower.

Methodology:

This experiment was conducted at the Floriculture Laboratory, Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI) in two consecutive years March, 2003 and 2004. Gladiolus spikes of 70 to 80 cm lengths were selected from the recommended variety BARI Gladiolus-1. Spikes were harvested when two or three basal floret started opening. Three spikes were randomly selected for each treatment and the treatments were replicated three times. The experiment was laid out in CRD factorial. There were two factors, two levels of pH (3.0 & 7.0) and four levels of sucrose (0, 1.5%, 3.0% & 4.5%). Normal water was used in the experiment with PH measured at 7.0. By adding citric acid the PH of another solution was adjusted to 3.0. After recording the fresh weight, three spikes were placed in 500 ml Erlenmeyer flask containing 400 ml of vase solution. Data were recorded on percentage of floret opening, days taken to deterioration, number of infected florets, water uptake by spikes (g/spike), water loss (g/spike), changes in fresh weight and vase life (days). Recorded data were statistically analyzed and mean comparison was carried out by DMRT.

Source of Information: SAARC J. Agri., 7 (1), 11-18: 2009

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the above results, it was found that pH 3.0 with 3.0% and 4.5% sucrose solution showed better performance on vase life of BARI gladiolus-1 in respect of most of the parameters. So, a vase solution containing 3% sucrose and having a pH of 3.0 may be recommended to extend the vase life of BARI gladiolus-1 variety.

Knowledge Management: Journal