Investigating the effect of nanoparticles of Tio2, nano-silver, and some essences on increasing vase life and the quality of cut flowers of Alstroemeria cv. konst

Alstroemeria is considered as one of the ten most popular flowers in the world which has received great attention due to the variety of its colors and shapes. The leaves getting yellow and petal abscission are major problems which decrease the life span of this flower. The present experiment investigates the antibacterial and antifungal effects of nanoparticles of silver and Titanium in different concentrations (0, 1, 3, 5, and 10 ppm) and the natural essences of lavender, mint, thyme (0, 10, 25, 50, 100 ppm), and sucrose 1% as the preservative solution on Alstroemeria cv. Const coco flower. Traits such as vase life, relative fresh weight, solution uptake, total chlorophyll, petal Anthocyanin, appearance quality, total soluble in stem and petal, the percent of unopened buds, and the percent of dry matter in the flower were analyzed at the end of the vase life. The result indicated that the appearance quality, relative fresh weight, solution uptake, and vase life were the best treatments in all of the concentrations of lavender essence (5, 10, 50, and 100 ppm) and nano-silver (3 and 5 ppm) respectively with 19, 18.3, 19, 19, 18.83, and 18.33 days of vase life. The control had the most limited vase life with 11.5 days.