devernalization

Devernalization is the process of reversing vernalization, which is the exposure of plants or seeds to low temperatures to stimulate flowering or enhance germination. When a plant has been vernalized, it has been prepared for blooming. Devernalization can occur when these plants or seeds are exposed to high temperatures, causing them to revert to their original non-flowering state. For example, onion sets stored in near-freezing temperatures are vernalized and ready to flower. However, exposing them to temperatures above 26.7 °C (80 °F) for a few weeks before planting shifts them to a bulb-forming phase instead of flowering. This process is crucial for certain crops, like onions, to ensure they produce bulbs rather than flowers.1