Versuche zum enzymatischen Abbau der «gebundenen» gibberelline vonPharbitis purpurea

Summary Seeds and fruit walls ofPharbitis purpurea contain in addition to the free gibberellins A₈, A₃, A₅, more polar gibberellin-like substances, so-called bound gibberellins tentatively namedPharbitis and. After purification by thin layer chromatography, these 2 substances were treated with both Ficin and Emulsin in buffered solutions of pH 6.2. After treatment with Emulsin, the free gibberellins A₈ and A₅, after treatment with Ficin the gibberellins A₃ and A₅, were detectable in thin layer chromatograms.