Phytohormone changes during storage root growth in Beta species |
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| Authors: | D. J. Hosford J. R. Lenton G. F. J. Milford T. O. Pocock M. C. Elliott |
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| Affiliation: | (1) School of Life Sciences, Leicester Polytechnic, LE1 9BH Leicester, UK.;(2) Plant Science Division, Long Ashton Research Station, University of Bristol, Long Ashton, BS18 9AF Bristol, UK.;(3) Department of Physiology and Environmental Physics, Rothamsted Experimental Station, AL5 2JQ Harpenden, Herts., UK |
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| Abstract: | The physiological and morphological factors necessary for efficient accumulation of sucrose in sugar beet (Beta vulgaris L.) are considered in relation to potential uses of plant growth regulators to modify the anatomy of storage roots so as to increase sucrose content and yield. The percentage of sucrose in root fresh and dry matter is closely related to root structure. Sugar beet, mangold and chard are three sub-species of Beta vulgaris that differ considerably in their anatomy, assimilate partitioning, sucrose concentration and root dry matter yield. The concentrations of indole-3-acetic acid (IAA), abscisic acid (ABA) and cytokinins were measured during the growth of the storage root in each of these cultivars. Correlations were found between the phytohormone levels and the formation of secondary cambia and their subsequent cell division and expansion activity. |
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| Keywords: | Beta vulgaris L. storage root development auxin cytokinin ABA |
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