In this article:

Removal of fruit from potted cuttings of Vitis vinifera L. increased the concentration of a cytokinin-glucoside in leaf tissue extntcts and decreased the level of extractable gibberellin-like substances.

The glucoside is not present in xylem exudate and appears to be synthesized in the leaves.

Berry extracts contain zeatin riboside and smaller amounts of cytokinin-glucoside.

The changes in the level of these hormones are discussed in relation to previous results on abscisic acid and phaseic acid levels in grape leaves

The Effect of Fruit Removal on Cytokinins and Gibberellin-like Substances in Grape Leaves

1977, Planta, vol 136, pages 25-30

csiro 440

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