Abstract
The formation of gums and gum-like substances in bulb scales, stem tissue and perianth leaves of tulip cultivars ‘Apeldoorn’ and ‘Oxford’ was found to occur after the application of lanolin paste containing 1 or 5% 2-chloroethylphosphonic acid (ethephon), 0.2% indole-3-acetic acid (IAA) or both ethephon and IAA. The composition of the gums induced by ethephon in ‘Apeldoorn’ bulbs was analysed after hydrolysis. Xylose and arabinose were mainly found with traces of glucose, mannose and uronic acid.
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