Role of Ethylene in Ovary Growth and Vase Life of Dendrobium ´pompadour´ Flowers

Longevity ofEpidendrum ibaguenseflowers as affected by pre-loading treatments and vase solution

“…As Epidendrum was extremely responsive to inhibitors of ethylene action, pre-treating flowers with 1-MCP or STS resulted in greater longevity, and additional compounds such as carbohydrates and/or bactericides had a relatively weak affect on longevity (Table II). This result is similar to those in other ethylene-sensitive orchids such as Dendrobium treated with amino-oxyacetic acid (AOA) an inhibitor of ethylene synthesis (Ketsa et al, 2004). These authors also found that addition of sucrose had no influence on the longevity of flowers of Dendrobium pretreated or not with AOA.…”

The Dendrobium Orchid: Botany, horticulture, and utilization

“…It was noted that vase life of Dendrobium “Pompadour” inflorescences did not correlate with ambient temperature but those grown at high RH tended to have a longer vase life. Temperature and RH were positively correlated with flower size (Ketsa & Amuttiratana, 1986b). This may be because the large individual flowers grown during high RH contain greater carbohydrate and other reserves than the smaller sized individual flowers that are grown during low RH conditions.…”

“…Sucrose is included in most preservative formulations for Dendrobium flowers (Ketsa, 1986a, c; Ketsa & Amutiratana, 1986a; Ketsa & Teeracharoenpunya, 1986; Ketsa et al., 1995; Pattaravayo et al., 2013) but other metabolic sugars like glucose sometimes work better than sucrose (Ketsa & Boonrote, 1990; Rattanawisalanon et al., 2003). The optimal concentration of sugars varies with treatment and cultivar.…”

“…Depending on the Dendrobium cultivar, ethylene concentrations of 0.4–0.8 μL L −1 were found inside the cardboard boxes used for export shipment and several Dendrobium cultivars have shown precocious abscission of flowers and buds, which is likely to have been due to the accumulated ethylene. This ethylene can also induce premature wilting (Ketsa et al., 1997). A 1‐MCP pretreatment prior to packing for simulated export shipment resulted in effectively reducing flower abscission and wilting of open flowers and flower buds after unpacking and holding in vase water (Figure 18).…”

“…A carbohydrate supply is required for both bud opening of Dendrobium flowers (Ketsa & Amutiratana, 1986a;Ketsa & Teeracharoenpunya, 1986) and for vase life of the cut inflorescence (Ketsa, 1986a(Ketsa, , 1986bKetsa & Boonrote, 1990;Rattanawisalanon et al, 2003). Carbohydrate accumulation may occur during the growth of flowers on the plant, or by being supplied to the cut flowers through a preservative solution.…”