Abstract
The display life of potted flowering Hibiscus rosa-sinensis L. plants (held in a simulated interior environment) was terminated by depletion of their carbohydrate reserves, as determined by reduction in dry matter content of roots, stems, leaves, buds, and flowers. The substantial dry matter content of the short-lived flowers (0.2 g for singles, 0.6 g for doubles) was only partially recaptured when the flowers senesced. There was considerable variance in the low light compensation points for different hibiscus species and cultivars. Although the death of hibiscus flowers appears to be coordinated by ethylene, inhibition of ethylene action by treating the flowers with silver thiosulfate (STS) or 1-methylcyclopropene (1-MCP) had only a modest effect in extending flower life. Strategies for developing cultivars with improved display performance are discussed. © 2002 Elsevier Science B.V. All rights reserved.
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