Abstract
Summary Changes in the amount of starch in relation to the carbohydrate pool, during senescence of carnation flowers ( Dianthus caryophyllus cv. Improved White Sim) were evaluated. The starch content of the petals declined gradually during senescence. The extent of decline was the greatest in cut flowers held in water, the least in attached flowers' and intermediate in flowers held in sucrose solution. Ethylene was found to enhance the decline in starch content. The possible role of ethylene in affecting the starch is discussed. Incorporation of 14 C-sucrose into starch in cut flowers suggests that cut flowers retain the potential of starch synthesis. However, the amount of synthesis depends largely on the prevailing light conditions.
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