Chlorella sp.: a new sustainable alternative to preserve the quality of cut sunflowers

Chlorella sp.: nova alternativa sustentável para preservar a qualidade dos girassóis de corte

Abstract

This is the first study using the microalga Chlorella sp. in the postharvest treatment of cut flowers. This research aimed to evaluate the effects of different doses and application methods of Chlorella sp. on the vase life of cut stems of ornamental sunflower cv. Vincent’s Choice. We conducted the experiment with the structure of the flower stem o different treatments of Chlorella sp. application (pulsing, spraying, and maintenance solution) in five doses (0; 5; 10; 15 or 20 mL L^-1). The results indicated that both spraying, and maintenance solution applications were beneficial. The calculated dose of 17.3 mL L^-1 for spraying and 13.4 mL L^-1 for the maintenance solution were the most effective in delaying the yellowing and rotting, preserving the flower stems’ structure and color. Using Chlorella sp. as a floral preservative for this species represents a sustainable and efficient alternative, contributing to sustainable agricultural practices and opening new perspectives for future research and practical applications in ornamental horticulture.

Keywords:
Bioinput; Cut flowers; Helianthus annus L.; Ornamental horticulture