title: The abscisic acid content of dormant birch buds.
abstract: Abscisic acid (ABA) has been identified in the buds and xylem sap of Betula verrucosa (Ehrh.). Buds also contain esterified ABA. In the course of the winter the proportion of esterified ABA in the buds undergoes a progressive increase which may be associated with emergence from dormancy.
authors.affiliation: Department of Botany and Microbiology, The University College of Wales, SY23 3DA, Aberystwyth, UK.
authors.forename: M A
authors.initials: MA
authors.lastname: Harrison
authors.forename: P F
authors.initials: PF
authors.lastname: Saunders