REGULATION OF ABSCISSION IN GROWING FRUIT
Abscission of young, developing fruit is viewed as the result of complex correlative events. This conclusion derives from the observation that cyclic waves of fruit abscission are constantly coupled with other manifestations such as leaf drop or episodic reduction of growth in shoots and fruit (including the persisting ones). A working hypothesis has then been proposed which suggests that episodes of reduced growth reflect temporary stress conditions in the whole plant. Fruit and shoots would struggle against such a stress. Weaker fruit and shoots succumb, however, apparently by entering an irreversible phase of stunting which will lead them, respectively, to abscission or to terminal-bud formation.
Zucconi, F. (1981). REGULATION OF ABSCISSION IN GROWING FRUIT. Acta Hortic. 120, 89-94