Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
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Plant Physiology 63:774-777 (1979)
© 1979 American Society of Plant Biologists

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Abscisic Acid and the Photoperiodic Induction of Dormancy in Salix viminalis L 1

Ronald Alvim2, Peter F. Saunders3 and Raimundo S. Barros2

2 Centro de Pesquisas do Cacau, CEPLAC, Caixa Postal 7, 45600 Itabuna, Bahia, Brazil, 3 Department of Botany and Microbiology, University College of Wales, Aberystwyth, Wales

A series of growth room experiments was carried out aiming to establish the role of abscisic acid on dormancy of Salix viminalis L. The inhibitor content and abscisic acid levels of extracts from roots, sap, leaves, and apical tissues of willow were measured using biological assay and gas-liquid chromatography.

No evidence was obtained that photoperiodically mediated dormancy is associated with changes in abscisic acid levels or {beta}-inhibitor activity.

1 This paper represents part of the Ph.D. dissertation of R. A., whose work was supported by CEPLAC (Brazil), by the "Conselho Nacional de Pesquisas" (Brazil), and by the Ministry of Overseas Development (Great Britain).






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Copyright © 1979 by the American Society of Plant Biologists