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Gibberellins in developing cocoa leaves

by Krekule, J.
Publisher: 1971Subject(s): SUSTANCIAS DE CRECIMIENTO VEGETAL | THEOBROMA CACAO | HOJAS | ACIDO GIBERELICO | ETAPAS DE DESARROLLO DE LA PLANTA | CLONES AMELONADOS | CROMATOGRAFIA | PLANT GROWTH SUBSTANCES | THEOBROMA CACAO | LEAVES | GIBBERELLIC ACID | PLANT DEVELOPMENTAL STAGES | CHROMATOGRAPHY | SUBSTANCE DE CROISSANCE VEGETALE | THEOBROMA CACAO | FEUILLE | ACIDE GIBBERELLIQUE | STADE DE DEVELOPPEMENT VEGETAL | CHROMATOGRAPHIE In: Annals of Botany (RU) v. 35(140) p. 271-276Summary: The occurrence of gibberellin-like substances in cocoa has been demonstrated. Using paper and TLC chromatography and lettuce hypocotyl bioassay the gibberellins in three stages of cocoa (Theobroma cacao L. cv. Amelonado) leaf development were compared. The highest activity in the acidic and non-acidic ethylacetate fraction was found in mature leaves with cutinized epidermis. There was a similar pattern of activity level and distribution of active zones after chromatographic separation in young expanding leaves and in leaves which had attained full size but were not yet hardened
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2 ilus. 11 ref. Sum. (En)

The occurrence of gibberellin-like substances in cocoa has been demonstrated. Using paper and TLC chromatography and lettuce hypocotyl bioassay the gibberellins in three stages of cocoa (Theobroma cacao L. cv. Amelonado) leaf development were compared. The highest activity in the acidic and non-acidic ethylacetate fraction was found in mature leaves with cutinized epidermis. There was a similar pattern of activity level and distribution of active zones after chromatographic separation in young expanding leaves and in leaves which had attained full size but were not yet hardened

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