Abstract
Ethylene production and senescence of petals of pollinated carnation flowers were not prevented by removal of the ethylene produced by the gynoecium, suggesting that these events are a response to movement from the gynoecium of some stimulus other than ethylene gas. Application of 1-aminocyclopropane-1-carboxylic acid (ACC) to the stigmas caused an initial increase in gynoecium and petal ethylene production similar to that reported for pollinated flowers. This response was not seen in flowers whose stigmas were treated with indoleacetic acid (IAA). When [2-14C]ACC was applied to the stigmas of carnation flowers, radioactive ethylene was produced both by the gynoecia and by the petals. The possibility that ACC, transported from the stigmas to the petals, is responsible for the postpollination changes in carnation flowers is discussed.
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On leave from the Department of Botany, Potchefstroom University for CHE, Potchefstroom, South Africa 2520
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Reid, M.S., Fujino, D.W., Hoffman, N.E. et al. 1-aminocyclopropane-l-carboxylic acid (ACC)—The transmitted stimulus in pollinated flowers?. J Plant Growth Regul 3, 189–196 (1984). https://doi.org/10.1007/BF02042003
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DOI: https://doi.org/10.1007/BF02042003