title: Identification of (+)-abscisic acid in strawberry leaves.
abstract: The acidic ether extract of leaves collected in October from dormant strawberry plants outdoors at Invergowrie inhibited coleoptile growth in germinating wheat embryos. On paper chromatograms developed either with isopropanol: ammonium hydroxide: water (10:1:1) or isopropanol: 1% ammonium hydroxide (4:1), the zones possessing inhibitory activity had Rf's 0.6-0.7 and 0.6-1 respectively. Fractions possessing comparable activity were eluted from granular animal charcoal columns by 10% and 20% acetone in water, and, on further purification, eluted only by 10% ethyl acetate in chloroform from columns of celitesilicic acid (2:1). The inhibitor in this fraction was identified as (+)-abscisic acid (abscisin II, dormin) by spectropolarimetry.
authors: Scottish Horticultural Research Institute, Invergowrie, Dundee.
authors: O M
authors: OM
authors: Gabr
authors: C G
authors: CG
authors: Guttridge