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Differences in display life of miniature potted roses (Rosa hybrida L.).

Muller, R.; Andersen, A. S.; Serek, M.;

Scientia Horticulturae Year: 1998 Vol: 76 Issue: 1/2 Pages: 59-71 Ref: 14 ref.

1998

บทคัดย่อ

Differences in display life of miniature potted roses (Rosa hybrida L.).

The longevity of commercial miniature potted rose cultivars varied significantly. In some short-lived cultivars such as Bronze, 100% of the flowers faded after 12 days. In long-lived cultivars such as Vanilla or Charming, the loss in display quality was <10% after the same period. Flower senescence in some cultivars was accompanied by a clear climacteric rise in ethylene production, in others there was only moderate or very low ethylene production. Leaf and bud abscission, and flower senescence were accelerated when plants were exposed to exogenous ethylene, and there were marked differences in sensitivity and response to ethylene among cultivars. Longevity in the absence of ethylene was apparently related to timing of the onset of ethylene production. One cultivar with excellent longevity in air was also almost insensitive to exogenous ethylene, suggesting the potential for a breeding approach to increasing postharvest longevity of these plants.