Comparison of silver thiosulfate with 1-methylcyclopropene.
Dole J., Fonteno B., Blankenship S.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.44
2004
บทคัดย่อ
Comparison of silver thiosulfate with 1-methylcyclopropene.
The effects of STS (AVB) and 1-MCP (Ethylbloc) were determined on 14 commonly grown cut flower species, represented by one to three cultivars per species.Cut stems were harvested, untreated, and shipped overnight to Raleigh, North Carolina.Stems were unpacked, sorted, and placed in either deionized water (DI) and subjected to 1-MCP (740 nL l-1) or ambient air for 4 hr of DI plus STS at either 0.1 mM (Alstroemeria) or 0.2 mM (all other species) for 4 h.After treatment stems were removed, placed in polyethylene sleeves and stored either wet in DI water or dry in plastic-lined floral boxes at 5 °C in the dark for 4 days.After storage bunches were placed in DI water under 12 h (76 to 100 mol m-2 s-1) light per day.Flowers were monitored daily to determine the end of wholesale vase life which was desigated as the first day a change was noticed in the flower or inflorescence that wouls typically prevent it from being sold by a wholesaler.The consumer vase life was also recorded for each stem and that was designated as the day a typical consumer would dispose of it.The 19 cut flower taxa could be organized into four groups based on effectiveness of STS and 1-MCP: (1) Both STS and 1-MCP increased vaselife but STS was more effective: Dianthus caryophyllus (all three cultivars), Bouvadia, Lilium (Asiatic), and Lathyrus odorata.(2) Both STS and 1-MCP prevented the negative effects of dry storage: Freesia (both cultivars) and Chamelaucium (one cultivar).(3) STS increased vaselife while 1-MCP did not: Alstroemeria, Delphinium, Matthiola, and Gypsophila.(4) STS and 1-MCP either had no effect or a negative effect: Consolida, Eustoma, Ranuculus, Antirrhinum, and Chamelaucium (one cultivar).