ISHS Acta Horticulturae 405: VI International Symposium on Postharvest Physiology of Ornamental Plants
REDUCTION OF POST-PRODUCTION QUALITY LOSS IN POTTED MINIATURE ROSES |
| Authors: | Steven A. Tjosvold, M. Wu, M. S. Reid |
| Keywords: | Rosa hybrida, ethylene, silver thiosulfate, benzyladenine |
| Abstract:
Potted miniature roses (Rosa hybrida 'Belle Sunblaze') held after production in simulated home conditions (21 C, continuous fluorescent light) performed poorly due to premature yellowing and abscission of flower buds and leaves, and failure of flower buds to open. These symptoms were accelerated when the plants were exposed to low concentrations (1 ppm) of ethylene. Spray application of the cytokinin, benzyladenine (BA), reduced leaf yellowing but had no significant effect on flower opening or bud abscission. Spray application of 1 mM silver thiosulfate (STS) strongly promoted flower display but did not prevent leaf yellowing. A combined BA and STS treatment greatly improved the post-production quality of rose plants, particularly if applied 1 day before harvest. Chemical names used: benzyladenine (BA), silver thiosulfate (STS). | |
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