Effects of ethephon and ancymidol on plant height and flower abortion of Easter lily

Wees, David

doi:10.4141/cjps93-114

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Although we have found no research systematically evaluating the effect of ethephon drench application time after transplanting, we have found previous reports of ethephon drench applications to bulb crops at different physiological stages (Moe, 1980;Wees, 1993). Moe (1980) reported suppression of daffodil (Narcissus pseudonarcissus) peduncle and leaf elongation increased with ethephon concentration, but decreased with later applications.…”

Section: Discussionmentioning

confidence: 94%

“…However, when ethephon was applied when leaves were 18 cm long, daffodil flowers and leaves were 9% to 24% and 9% to 17% shorter, respectively, than untreated plants. Similarly, Wees (1993) treated 'Nellie White' easter lilies (Lilium longiflorum) when shoots were 10-16 cm tall (1989 or 1990 season) or 7-9 cm tall (1990 or 1991 season). Easter lilies were 17% to 53% shorter than untreated plants when taller shoots were treated, whereas lilies were 36% to 67% shorter than untreated plants when shorter shoots were treated.…”

Section: Discussionmentioning

confidence: 99%

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Concentration and Timing of Ethephon Drench Applications Interact to Affect Growth and Flowering of Containerized Angelonia and Geranium

Currey¹,

McCabe²,

Walters³

2016

horts

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Ethephon drenches have been reported to effectively control growth of containerized bedding plants. However, previous researchers have indicated that the effects of ethephon drenches on growth and flowering may differ depending on the timing of applications. Our objectives were to quantify the effects of ethephon concentration, timing of substrate drench application, and their interaction on the growth, size, and flowering of two annual bedding plants. Angelonia (Angelonia angustifolia) and geranium (Pelargonium ×hortorum), seedlings were planted in 10.2-cm-diameter containers filled with a commercial, soilless growing substrate composed of (by vol.) 75% sphagnum peatmoss, and 25% perlite. Five, 10, 15, or 20 days after transplanting seedlings, 70-mL aliquots containing 0, 50, 100, or 200 mg·L−1 ethephon were applied as substrate drenches. Species varied in their growth and flowering responses to ethephon concentration, drench application timing, and their interaction. For angelonia, flowering was delayed most with early applications and high concentrations, and delay was diminished with later applications. Angelonia height was unaffected by late applications, though lateral growth was suppressed 20 days after transplant with 200 mg·L−1 ethephon. Flowering of geranium was only delayed when ethephon was applied 5 days after transplanting, whereas flowering, vegetative height, and shoot dry weight were affected more by earlier applications and higher concentrations. Width and root weight were only affected by ethephon concentration, with growth suppression increasing as concentrations increased. Ethephon is an effective growth regulator when applied as a substrate drench. However, the degree of activity and resulting impact on flowering, size, and growth is influenced by the interaction between ethephon concentrations and the timing of drench applications after transplanting.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Concentration and Timing of Ethephon Drench Applications Interact to Affect Growth and Flowering of Containerized Angelonia and Geranium

Currey¹,

McCabe²,

Walters³

2016

horts

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“…Long-term exposure to methane from planting until the end of vernalization increased both the number of buds, leaves and height without affecting forcing time, leaf yellowing or bud abortion. E thylene and related gaseous compounds reduce height, reduce or abort flower buds and induce premature leaf senescence of easter lilies (Mason and Miller, 1991;Prince and Cunningham, 1991;Wees, 1993). Most studies report effects on emerged plants to low ethylene concentrations (0.01 to 0.1 µL·L -1 ) (Blankenship et al, 1993).…”

mentioning

confidence: 99%

Easter Lilies React Differently to Short- or Long-term Exposure of Ethylene or Methane at Different Stages of Forcing

Brown¹,

Blom²,

Chu³

et al. 2002

horttech

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The sensitivity of easter lilies (Lilium longiflorum) to either ethylene or methane (products of incomplete burning in gas-fired unit heaters) was tested during rooting [3 weeks at 18 °C (65 °F)], vernalization [6 weeks at 6 °C (43 °F)] and subsequent greenhouse forcing (15 weeks at 18 °C). Starting at planting, easter lilies were exposed for one of seven consecutive 3-week periods (short-term), or for 0, 3, 6, 9, 12, 15, 18, or 21 weeks starting at planting (long-term) to either ethylene or methane at an average concentration of 2.4 and 2.5 μL·L-1(ppm), respectively. Short- or long-term exposure to ethylene during rooting and vernalization had no effect on the number of buds, leaves, or plant height but increased the number of days to flower. Short-term exposure within 6 weeks after vernalization reduced the number of buds by 1 bud/plant compared to the control (no ethylene exposure). However, extensive bud abortion occurred when plants were exposed to ethylene during the flower development phase. Long-term exposure to ethylene from planting until after the flower initiation period resulted in only two to three buds being initiated, while continued long-term exposure until flowering caused all flower buds to abort. Short-term exposure to methane at any time had no effect on leaf yellowing, bud number, bud abortion, or height and had only a marginal effect on production time. Long-term exposure to methane from planting until the end of vernalization increased both the number of buds, leaves and height without affecting forcing time, leaf yellowing or bud abortion.

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Tolerance of dry-sale lily bulbs to elevated carbon dioxide in both ambient and low oxygen atmospheres

Legnani

Watkins

Miller

2006

Postharvest Biology and Technology

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Effects of ethephon and ancymidol on plant height and flower abortion of Easter lily

Cited by 5 publications

References 3 publications

Concentration and Timing of Ethephon Drench Applications Interact to Affect Growth and Flowering of Containerized Angelonia and Geranium

Concentration and Timing of Ethephon Drench Applications Interact to Affect Growth and Flowering of Containerized Angelonia and Geranium

Easter Lilies React Differently to Short- or Long-term Exposure of Ethylene or Methane at Different Stages of Forcing

Tolerance of dry-sale lily bulbs to elevated carbon dioxide in both ambient and low oxygen atmospheres

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