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ISHS Acta Horticulturae 34: Symposium on growth Regulators in Fruit Production

MORPHACTINS AS POSSIBLE FRUIT THINNING AGENTS FOR PEACHES

Authors:   J. Hugard, H. Clanet, A. Carbonneau
DOI:   10.17660/ActaHortic.1973.34.47
Abstract:
Trials with morphactins (derivatives of fluorene-9-carboxylic acid) as fruit thinning agents on cultivars of peach (Prunus persica Batsch) have shown that aqueous solutions of 30–40 ppm applied 10 days after full bloom induce a thinning effect similar to that obtained by the routine hand thinning commonly carried out 40 days after full bloom. Small scale trials with 14C-labelled morphactins have suggested a possible mode of action of these compounds as thinning agents.

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