Gibberellins in Suspensors of Phaseolus coccineus L. Seeds.
Analysis of extracts from 6300 (1.2 grams fresh weight) Phaseolus coccineus suspensors by combined gas chromatography-mass spectrometry has demonstrated the presence of five C(19)-gibberellins, GA(1), GA(4), GA(5), GA(6), GA(8), and one C(20)-GA, GA(44). The major GAs present were GA(1) and GA(8). Data are discussed in relation to previous results obtained in P. coccineus seed as well as in the embryo-suspensor system.
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Cattedra di Fisiologia Vegetale, Facoltà di Agraria, Università degli Studi di Pisa, 56100 Pisa, Italy.
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