Endogeneous levels of indole-3-acetic acid and abscisic acid during the rooting of Cotinus coggygria cuttings taken at different times of the year |
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Authors: | D. Blakesley G. D. Weston M. C. Elliott |
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Affiliation: | (1) School of Biological Sciences, University of Bath, BA2 7AY Bath, UK;(2) School of Life Sciences, Leicester Polytechnic, Scraptoft Campus, LE7 9SU Leicester, UK |
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Abstract: | Cuttings of Cotinus coggyria cv Royal Purple rooted well in the spring but not at all later in the season. Levels of free and conjugated IAA and ABA were measured in cuttings taken at different times of the year. Hormones were measured in the leaf, the upper stem and the lower stem (rooting zone). In cuttings taken in early June the level of IAA was much higher than that of conjugated IAA. In late July the opposite was found. No significant differences in ABA levels were found although the ABA/IAA ratio changed dramatically. |
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Keywords: | rooting hormone analysis indole-3-acetic acid (IAA) abscisic acid (ABA) season Cotinus coggygria cv Royal Purple |
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