Tuberization in Cassava (Manihot esculenta) : Cytokinin and Abscisic Acid Activity in Tuberous Roots

Copyright © 1985 Gustav Fischer Verlag, Stuttgart. Published by Elsevier GmbH.. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 118(1985), 4 vom: 01. März, Seite 357-66
1. Verfasser: Melis, R J (VerfasserIn)
Weitere Verfasser: van Staden, J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 1985
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article
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520 |a The nature and distribution of cytokinins and abscisic acid in tuberous roots of cassava (Manihot esculenta Crantz) was studied. Trans-ribosylzeatin, dihydrozeatin and trans-zeatin were tentatively identified as the major cytokinins in tuberous root extracts. Cytokinin activity was concentrated in the meristematic region of the secondary xylem and in the phloem. This suggests a role for cytokinins in the regulation of meristematic activity which is responsible for the growth of the tuberous roots. Some cytokinin activity which co-eluted with cytokinin glucosides was found in extracts from the phloem. Inhibitor activity which was tentatively identified as cis-abscisic acid was present in tuberous root extracts. The activity of this hormone did not vary greatly between the different tissues analysed 
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