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Embryo Development in Ripe Seeds of Eranthis hiemalis and its Relation to Gibberellic Acid

1974; Wiley; Volume: 30; Issue: 3 Linguagem: Inglês

10.1111/j.1399-3054.1974.tb03644.x

1399-3054

Henning Frost-Christensen,

Plant tissue culture and regeneration

Abstract The ripe seeds of Eranthis hiemalis (L.) Salisb., the winter aconite, contain undeveloped embryos. At 20–25°C the embryos grow only little, and the seeds do not germinate. Rapid embryo development starts if the seeds, after 3 weeks of “after‐ripening” at 20–25°C, are placed at low temperature, 3–4°C; germination then takes place after 2–3 months, Embryo development without germination occurs when the seeds are placed in gibberellic acid solutions at 20–25°C. Embryo development is inhibited at low temperature by the specific inhibitor of gibberellin biosynthesis, 2‐chlorethyl cholin chloride, but is restored by the simultaneous addition of gibberellic acid. It is suggested that one early effect of the cold is to bring about a synthesis of gibberellin.