Abstract
Lily is one of the prominent cut flowers on the international markets, so that its longevity is an important post-storage attribute. Blockage of xylem vessels and insufficient water uptake contributes to the short vase life of cut flowers. Bacteria block stem xylem vessels and because of that reduce rates of water supply to flowers. Nano silver has antimicrobial effects at low concentration. Prolongation of vase life cut lilies (L. orientalis ‘Bouquet’) flowers by nano-silver particles was studied. Cut flowers were kept in vase containing 5, 15, 25, 30 ppm of nano-silver solutions and deionized water as control treatment under controlled conditions. During vase period, vase life, vase solution uptake, initial fresh and bacterial numbers were measured. According to the results, all nano-silver treatments extended the longevity of cut flowers compare to control. Among these treatments the concentration of 30 ppm of silver-nano showed the highest vase solution uptake, initial fresh weight and lowest bacteria colony during the first 2 days of vase life. It was concluded that nano silver particles had a high potential for eliminating of bacterial contaminants. These for suggest that application of solutions containing superior advantageous of nano-silver particles is recommended to improve postharvest of L. orientalis ‘Bouquet’.
Highlights
Hybrid lilies are a diverse group of plant with numerous forms and colors, causing a good rank in world flower market (Vonk Noordegraff, 1998)
relative fresh weight (RFW) and vase solution uptake (VSU) of all NS treatment were higher than control treatment (Fig. 2 and 3)
The results showed that the silver nano-particles (SNPs) significantly differences (*p ≤0.05) comparing with control. 30 ppm concentration had the highest relative fresh weight, but no significant differences were seen with 25 ppm
Summary
Hybrid lilies are a diverse group of plant with numerous forms and colors, causing a good rank in world flower market (Vonk Noordegraff, 1998). Short vase life of flowers could be one of the most important reasons for the inability of florists to develop any suitable market. The length of vase life is one of the most important factors for quality of cut flowers. The main cause of abbreviated vase life in cut flowers is failure in water relations. Blockage of water conducting xylem vessels contributes to the short postharvest life of many cut flowers Jedrzejuk and Zakrzewski (2009). Stem blockage might be microbial or physiological (Louband and van Doorn, 2004)
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