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1. Effects of gibberellin and auxin on the synthesis of abscisic acid and ethylene in buds of dormant and sprouting potato tubers

Author

M. Z. Dogonadze, T. A. Platonova, G. L. Shaposhnikov, and N. P. Korableva

Subjects
chemistry.chemical_classification, Ethylene, fungi, food and beverages, Meristem, Applied Microbiology and Biotechnology, Biochemistry, chemistry.chemical_compound, chemistry, Auxin, Botany, Dormancy, Gibberellin, Abscisic acid, Gibberellic acid, Sprouting
Abstract

Gibberellic and β-indolylacetic acids at concentrations of 10−7-10−5 M were shown to change the hormonal status and duration of true dormancy in potato tubers. Gibberellic acid shortened the true dormancy and decreased the contents of abscisic acid and ethylene in the apical meristem. β-Indolylacetic acid elongated the true dormancy and decreased abscisic acid production, but caused a more than tenfold increase in the production of ethylene by apical tissues. The data suggest that β-indolylacetic acid and ethylene, as well as gibberellic and abscisic acids, are involved in the regulation of true dormancy in potato tubers.

Published
2000

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