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| Description: Ripening black cherries (Prunus serotina) release ethylene that stimulates abscission of the fruits Abscission as part of normal life cycles. Abscission occurs in zones. Picture Stats: Views: 130 Filesize: 469.86kB Height: 1500 Width: 1067 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47871 |