The Physiology of Apple Pre-harvest Fruit Drop
نویسنده
چکیده
As apples ripen they begin to produce large amounts of the ripening hormone, ethylene. Ethylene stimulates fruit softening and the formation of an abscission zone in the stem. Ethylene stimulates the production of enzymes (cellulase and polyglacturonase) that break down the cell walls and the glue that holds cell walls together in the abscission zone of the stem, leaving the fruit connected to the tree by only the vascular strands, which are easily broken.
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