An investigation was made to study the effect of different concentrations of MnSO4 (80ppm, 100ppm), Al2SO4 (30ppm, 40ppm) AgNO3 (100ppm, 150ppm), Vitamin B6 (5ppm, 10ppm) and sucrose (5%,10%) on the rose cut flower. Visual symptoms of neck bending and blackening of petals were also observed. The study was carried out according to CRD (Complete Randomized Design) with two repeats and six treatments. Maximum vase life in terms of days was observed in treatment Aluminium sulphate 40ppm. Maximum water uptake was also recorded in Aluminium sulphate 30ppm (18ml). Some other post harvest characteristics were also evaluated.
Keywords: Aluminum sulphate, rose flowers, preservative solutions. Kardinal., Vase life.
The rose is most popular flower of the world, widely used as cut flower; much praised by poets, loved by amateurs and households as well.
The vase life of cut flower roses is well known to be affected by the surrounding air conditions. Very limited work has been done on the effect of altering the temperature of the vase water itself to enhance water uptake or inhibit disease.
There is need to explore new horizons in the field of post harvest biology and technology to increase the vase life of roses as cut flowers.
The aim of this study was to estimate the influence of different concentrations of MnSO4 (80ppm, 100ppm), Al2SO4 (30ppm, 40ppm) AgNO3 (100ppm, 150ppm), Vitamin B6 (5ppm, 10ppm) and sucrose (5%, 10%) on the rose cut flower.
Material and Methods:
The present experiment was carried out in post harvest lab of Directorate of Floriculture (Training and Research). Solutions of different concentrations of MnSO4 (80ppm,100ppm), Al2SO4(30ppm, 40ppm) AgNO3 (100ppm, 150ppm),Vitamin B6(5ppm, 10ppm) and sucrose(5%,10%) were prepared in bottles. Each bottle contained 200 ml preservative solution. Tap water was used as a control treatment in each replication (total of 6 treatments). kardinal cultivar was used for experiment. Rose flower obtained and transported to post harvest laboratory, Directorates of Floriculture, during April. The flowers were harvested early in the morning at bud stage. A slanting cut was made at the end of the stem to increase the surface area for solution uptake. The duration of whole experiment was 9 days. The maximum and minimum laboratory temperature was fluctuated between 25-28ºC and relatively humidity was 44%-57% during the course of investigation. Each treatment consisted of two cut flowers. Each cut was positioned in a glass vessel with preservatives upto 200 ml solution. The flowers were kept in solution. And data were collected according to the following parameters
- Vase life
- Neck bending
- Blackening of petals
- Half opening of petals
- Full opening of petals
- Un opening of petals
- Vase solution uptake
Results and Discussions:
Post harvest life of cut rose flower ”kardinal‟ was enhanced considerably by use of aluminum sulfphate 40ppm compared to control (Tab. water). application of 5% sucrose less effective then aluminium sulphate. The buds of unopened flowers treated with silver nitrate150ppm containing solution didn’t show good results as compared with control treatment. T1 and T4 had same vase life. Blackening of petals observed in all treatment. Neck bending maximum in Al2SO4 30ppm and Silver Nitrate 150ppm. There was no neck bending in Manganese Sulphate 80ppm and Al2SO4 40ppm. Maximum opening of petals Al2SO4 40ppm and minimum in silver nitrat150ppm Vit B6 10ppm. Half opening of petals was more observed in silver nitrat150ppm Vit B6 10ppm and less observerd in Al2SO4 40ppm and sucrose 10%. Sucrose 10% had more percentage of unopened petals. T3 and T4 had 0% of unopened petals maximum vase solution uptake was observed in Al2SO4 30ppm and minimum observed in Manganese Sulphate 100ppm and sucrose 10%.
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