title: Abscisic acid as an endogenous component in lettuce fruits, Lactuca sativa L. cv. Grand Rapids. Does it control thermodormancy?
abstract: Abscisic acid (ABA) has been unequivocally identified as an endogenous component of seeds of Grand Rapids lettuce. Both "free" and "bound" ABA levels were followed during imbibition at various temperatures but no clear role for ABA in the imposition of thermodormancy emerged. Furthermore it was apparent that different seed batches showed different ratios of "free" to "bound" ABA and patterns of changes. An unsuccessful attempt was made to identify "bound" ABA, presumed to be the glucosyl ester.
authors.affiliation: Botany Department, University of Glasgow, G12 8QQ, Glasgow, UK.
authors.forename: A M
authors.initials: AM
authors.lastname: Berrie
authors.forename: J
authors.initials: J
authors.lastname: Robertson