abscission
- n shedding of flowers and leaves and fruit following formation of scar tissue in a plant
- n the act of cutting something off
- Leaf loss happens by a process called abscission, triggered by shortening day length. The plant forms a layer of cells that isolate the leaf from its twig, and where the leaf can readily detach.
- Abscission is a very complex process and involves sebveral plant hormones.