Effect of some preservative solutions on vase life of helianthus annuus

الملخص EN

This experiment was carried out during two successive seasons of (2021 - 2020) on Sunflower Helianthus annuus cut flowers at Antoniades Research Branch, Ornamental Plants and Landscape Gardening Res.

Dept., Hort.

Res.

Inst., ARC, Alexandria, Egypt.

To study the effect of some preservative solutions on vase life of Helianthus annuus.

Completely randomized designed (CRD) experiment with three replicates for each treatments were conducted as follow: control (distilled water), Silver thiosulphate (STS) (0.06 and 0.08 mM +Sucrose 3%), Nano-silver thiosulphate (NST) at (5 and 7.5 mg/l +Sucrose 3%), 8-hydroxyquinoline sulphate (8-HQS) at (200 mg/l +Sucrose 2%), Mint oil at (50 and 75 mg/l +Sucrose 3%) and Thyme oil at (50 and 75 mg/l +Sucrose 3%).

In both seasons, results showed that all seasons treatments increased fresh weight, water uptake, vase life, flower diameter, and chemical characters such as Chlorophyll a, chlorophyll b, total chlorophyll, carotene pigments, carbohydrates, total sugars, and reducing sugars when compared to control.

However, NST at (7.5) mg/l, STS at 0.08 mM, thyme oil 75 mg/l and mint oil 75 mg/l were more successful than other treatments in improving quality parameters.