title: Gibberellin-like activity in suspensors of Tropaeolum majus L. and Cytisus laburnum L.
abstract: Gibberellins in the embryo-suspensor system have been considered so far only in Phaseolus coccineus. We present in this report the localization of gibberellin-like substances in the suspensors of Tropaeolum majus L. and Cytisus laburnum L. The total gibberellin activity (expressed as gibberellic-acid equivalent in the α-amylase bioassay) in 2000 suspensors (106 mg fresh weight; FW) of C. laburnum and in 600 suspensors (236 mg FW) of T. majus were 50.9 μg g(-1) FW and 8.9 μg g(-1) FW respectively.
authors.affiliation: Cattedra di Fisiologia Vegetale, Facoltà di Agraria, Università degli Studi di Pisa, Viale delle Piagge, 23, I-56100, Pisa, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Picciarelli
authors.forename: A
authors.initials: A
authors.lastname: Alpi
authors.forename: L
authors.initials: L
authors.lastname: Pistelli
authors.forename: M
authors.initials: M
authors.lastname: Scalet