The use of growth retardants to improve microtuber formation by potato (Solanum tuberosum) |
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| Authors: | Barbara M R Harvey Samuel H Crothers Nicola E Evans Christopher Selby |
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| Institution: | (1) Agricultural Botany Research Division, Department of Agriculture for Northern Ireland, Newforge Lane, BT9 5PX Belfast;(2) Department of Agricultural Botany, The Queen's University of Belfast, Newforge Lane, BT9 5PX Belfast, Northern Ireland |
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| Abstract: | The growth retardant chlormequat stimulated microtuber formation by a recalcitrant cultivar of potato (Solanum tuberosum), but reduced microtuber fresh weight in a cultivar that tuberised readily in its absence. Inhibition of microtuber growth by high concentrations of chlormequat was confirmed using a different in vitro system where all cultivars tuberised in the absence of growth retardants.Alternative growth retardants were tested. Daminozide also had a detrimental effect on microtuber fresh weight, but ancymidol and paclobutrazol did not inhibit microtuber growth at the concentrations required for stimulation of tuberisation by recalcitrant cultivars. In addition, 10-5 M ancymidol and paclobutrazol inhibited premature sprouting of microtubers in vitro.Abbreviations BA
benzyladenine
- DMSO
dimethyl sulphoxide
- FW
fresh weight
- PAR
photosynthetically active radiation
- SE
standard error |
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| Keywords: | ancymidol chlormequat daminozide microtuber paclobutrazol Solanum tuberosum |
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