Ornamentals Spanish - UC Postharvest Technology Center

Ornamentals Spanish - UC Postharvest Technology Center

Ornamentals Spanish - UC Postharvest Technology Center

Recommendations to Maintain Postharvest Quality

Helianthus annus . In recent years, cultivars (cultivated varieties) of sunflower have become an important floristic item and a wide range of shapes and colors are available in the trade. Helianthus is derived from the Greek "helios", sun, and "anthos", flower.

Quality Indexes

Sunflowers are usually harvested when " petals "(outer flowers or ligulae) have been deployed and are at least upright. For local markets the flowers are harvested with fully expanded and horizontal lithulas. There should be no yellow or wilted leaves. Post-harvest lifespan is often determined more by yellowing or desiccation of leaves than by problems with flowers.

Classification and Arrangement in Branches

quality sunflowers have uniform ripeness, are free of defects, have straight stems and have good quality foliage. The cultivars with small flowers can be arranged in bouquets of 10 or 12 units, while large flower types are usually arranged individually.

Sensitivity to Ethylene p> Prolonged exposure of sunflowers to low concentrations of ethylene results in abscission (falling) of liguria.

The tendency of sunflowers to prematurely wither in vase can be avoided by treating flowers (for 15 to 30 minutes ) with clean water with detergent (Tween-20, Triton X-100, detergent lavalozas) 0.02%.

Storage Conditions

can store safely at 0-1 ° C.

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