Abstract
During rooting of apple microcuttings, we applied 24h pulses with ACC (1-aminocyclopropane-l-carboxylic acid, an ethylene precursor) or STS (silverthiosulfate, an inhibitor of ethylene action). The timing of the pulse and the auxin concentration in the medium determined the effect (promotive, inhibitory, or no effect). Another major factor was submergence of the basal 4 mm of the stem in the medium: the results indicated that this led to entrapment and accumulation of ethylene in the basal part of the stem (the portion that produces the roots) at high auxin concentration. In stem-segments or slices that are both cultured on top of the medium, ethylene accumulation did not occur. The detrimental effect of auxin on shoot and roots was -at least partly- due to auxin-induced ethylene synthesis.
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© 1999 Springer Science+Business Media Dordrecht
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De Klerk, GJ., Paffen, A., Jasik, J., Haralampieva, V. (1999). Dual Effect of Ethylene During Rooting of Apple Microcuttings. In: Altman, A., Ziv, M., Izhar, S. (eds) Plant Biotechnology and In Vitro Biology in the 21st Century. Current Plant Science and Biotechnology in Agriculture, vol 36. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4661-6_9
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DOI: https://doi.org/10.1007/978-94-011-4661-6_9
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