Abstract
Changes in levels of abscisic acid (ABA) and cytokinin activity in the xylem sap of willow (Salix viminalis, L.) were followed throughout two growth cycles.
Growth in spring was preceded by decreasing levels of ABA and an increase in cytokinin activity. The onset of dormancy was associated with low levels of cytokinins and high contents of ABA. A second peak of ABA was found in July which was not related to the dry weight of the sap. The main cytokinin activity in the sap was due to a zeatin riboside-like compound.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Reid D. M., Burrows W. J. Cytokinin and gibberellin-like activity in the spring sap of trees. Experientia. 1968 Feb 15;24(2):189–190. doi: 10.1007/BF02146981. [DOI] [PubMed] [Google Scholar]