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

EFFECT OF GIBBERELLIC ACID ON PHOTOPERIOD CONTROLLED GROWTH IN SEEDLINGS OF BLACK CURRANT (RIBES NIGRUM L.)

Author:   A. Karnatz
DOI:   10.17660/ActaHortic.1973.34.19
Abstract:
Black currant seedlings grown under day lengths of 8 or 12 hours were very dwarfed in habit compared with those grown under day lengths of 16 or 20 hours. Weekly sprays of 250 ppm GA3 were ineffective in promoting appreciable elongation of the main stem in short days, although they strongly increased lateral branching. In long days GA3 had little effect on elongation growth or branching.

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34_18     34     34_20

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