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Plant Physiology 53:658-662 (1974) © 1974 American Society of Plant Biologists Dual Effects of Ethylene on Potato Dormancy and Sprout Growth 1a Department of Vegetable Crops, University of California, Davis, California 95616
Dormant potato tubers (Solanum tuberosum L.) of two cultivars were treated with various concentrations of ethylene gas for various exposure periods. As has been shown by others, ethylene caused a rapid but transient increase in respiration rate, which appeared to be independent of any effects on dormancy. All concentrations tested caused accelerated sprouting, 2 microliters per liter being the most effective. Ethylene exerts a dual effect on potato tubers: it markedly shortens the duration of rest, but it inhibits elongation of the sprouts during extended treatment. Comparing these results with published work on seeds, bulbs, and corms suggests that ethylene must have a significant but as yet unexplained role in rest and dormancy. However, since the most effective ethylene treatment did not equal the response elicited by treatment with ethylene chlorhydrin, other factors must also contribute to termination of rest.
2 On leave from Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel. 1 This investigation was supported in part by North Atlantic Treaty Organization Research Grant 541 to L.R. This article has been cited by other articles:
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