Abstract

  An experiment was carried out at the laboratory, Department of Horticulture, Hajee Mohammad Danesh Science and Technology University, Dinajpur during 1^st to 17^th December, 2017. The main objective of this research was to increase the vase life of two cut rose cultivars using different preservative solutions. The two factor experiment was laid out in the completely randomized design with three replications. There were two cultivars: Lincoln (V₁) and Tajmahal (V₂), and these flowers were kept in six preservative solutions viz., T₁= water (control), T₂= 2% sucrose + 50 ppm AgNO₃, T₃= 2% sucrose + 100 ppm AgNO₃, T₄= 2% sucrose + 150 ppm AgNO₃, T₅= 2% sucrose + 150 ppm 8-HQS, and T₆= 2% sucrose + 200 ppm 8-HQS. Flowers were monitored for 1, 3, 5, 7, 9, 11, 13, 15 and 17 DAS of storage. Parameters studied in the experiment were: flower head diameter (cm), petal wilting (1-7 scale), petal discolouration (1-8 scale), petal blackening (1-8 scale), bent neck (1-8 scale), flower opening (1-4 scale), total soluble solids (TSS),% dry weight (g), solution uptake (g/flower), transpiration loss (g), water balance (g) and vase life (days). Lincoln performed better than Tajmahal. Among the preservatives, T₂ (2% sucrose + 50 ppm AgNO₃) gave the best results in respect of all parameters whereas T₁ gave the lowest results in different DAS. The combinations of cultivars and preservatives demonstrated a significant variation (1%) in vase life and most of the others (1% or 5%). The highest vase life (16.67 days) of Lincoln and Tajmahal were recorded when those were kept in T₂ and T₃, respectively whereas it was only 6.67 days in control. The highest solution uptake rate was recorded in V₁T₂ (14.50 g). At the end of the storage, the highest water balance rate was with V₁T₂ (0.33 g). The lowest number of petal discolouration was noted in V₁T₂ (5.17) than other treatment combinations. Again, at the end of storage, the minimum bent neck was observed in the combination V₁T₂ (3.50) than the others. In term of transpiration loss,% dry weight, total soluble solids, the best results were in V₁T₂ than the rest combinations. At the end of storage, the maximum flower head diameter was observed in V₂T₃. Different quality parameters like petal wilting and petal blackening were also significantly minimum in Lincoln preserved in T₂ than the other preservatives. Overall, 2% sucrose with 50 ppm AgNO₃ solution extended the vase life and improved the quality parameters in rose cv. Lincoln than other preservatives.

Keywords: Preservative; Wilting, Discoloration; Vase Life; Rose

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Citation

Citation: Most. Mayna Begum., et al. “Effects of Preservatives on the Vase Life of Two Rose Cultivars" Acta Scientific Agriculture 4.2 (2020): 51-73.

Copyright

Copyright: © 2020 Most. Mayna Begum., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.