Effect of 1-MCP on the Postharvest Performance of Un-Rooted Poinsettia Cuttings

Faust, James E.; Lewis, Kelly P.

doi:10.17660/actahortic.2005.682.105

Cited by 7 publications

(3 citation statements)

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“…previously reported for cuttings of geranium, Pelargonium • hortorum L.H. Bailey (Kadner and Druege, 2004), and poinsettia, Euphorbia pulcherrima L. (Faust and Lewis, 2005). In vegetative tissues, ethylene biosynthesis is controlled by autoinhibition (Philosoph-Hadas et al, 1985), but application of 1-MCP relieves the autoinhibition of ethylene (Lomaniec et al, 2003).…”

Section: Discussionmentioning

confidence: 90%

“…Most of the published research has focused on methods for improving the storage longevity of cuttings by delaying postharvest leaf abscission and senescence. Investigations include the use of cold storage treatments (Behrens, 1988) and application of ethylene action inhibitors such as 1-methylcyclopropene (1-MCP), silver nitrate, and silver thiosulfate (Blankenship and Dole, 2003;Faust and Lewis, 2005;Kadner and Druege, 2004;Paton and Schwabe, 1987;Serek et al, 1998). Additional studies include application of gibberellins (Purer and Mayak, 1988) and thidiazuron (Mutui et al, 2005).…”

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confidence: 99%

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Effect of Time of Harvest on Postharvest Leaf Abscission in Lantana (Lantana camara L. ‘Dallas Red’) Unrooted Cuttings

Rapaka¹,

Faust²,

Dole³

et al. 2007

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This study investigated the preharvest carbohydrate status and postharvest ethylene action of unrooted shoot-tip cuttings of lantana ‘Dallas Red’ harvested at three times during the day (0800, 1200, and 1600 hr) in relation to subsequent leaf abscission, shoot apices blackening, and adventitious root formation. The cuttings harvested at various times during the day were stored in darkness at 20 ± 1 °C for 4 days in sealed polyethylene bags. The cuttings harvested at 0800 hr had lowest total nonstructural carbohydrate concentrations; however, the amount of ethylene production during postharvest storage was similar among harvest times and increased during the storage period. After 4 days of storage, 69% of the leaves of cuttings harvested at 0800 hr abscised, but only 22% and 8% of the leaves abscised in cuttings harvested at 1200 and 1600 hr, respectively. Application of 1-methylcyclopropene (1-MCP) increased ethylene production and suppressed leaf abscission regardless of the harvest time, but cuttings harvested at 0800 hr developed blackened shoot apices. Leaf abscission was negatively correlated with total nonstructural carbohydrate concentration in the leaves, but no relationship was found with ethylene production. These results indicate that a high endogenous carbohydrate status decreases the postharvest ethylene sensitivity in unrooted shoot-tip cuttings of lantana. Time of harvest influenced subsequent rooting response; however, 1-MCP application did not inhibit rooting. Among various storage treatments, the best rooting response was observed in cuttings harvested at 1600 hr and treated with 1-MCP. Therefore, significant improvement of postharvest storage quality in vegetative lantana cuttings could be achieved by harvesting cuttings late in the day and treating with 1-MCP.

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Section: Discussionmentioning

confidence: 90%

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confidence: 99%

Effect of Time of Harvest on Postharvest Leaf Abscission in Lantana (Lantana camara L. ‘Dallas Red’) Unrooted Cuttings

Rapaka¹,

Faust²,

Dole³

et al. 2007

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“…Unrooted geranium cuttings have a short postharvest life and low tolerance to high postharvest temperatures (Dole and Gibson, 2006;Faust and Lewis, 2005;Rapaka et al, 2008). Undesirable shipping conditions increased respiration, reduced carbohydrate concentration, and increased ethylene generation in geranium cuttings, which caused lower-leaf senescence during propagation (Mutui et al, 2005;Rapaka et al, 2008).…”

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Exogenous Applications of Benzyladenine and Gibberellic Acid Inhibit Lower-leaf Senescence of Geraniums during Propagation

Currey

López

Rapaka

et al. 2013

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After postharvest shipping, the lower leaves of zonal geranium (Pelargonium ×hortorum) cuttings often turn chlorotic and necrotic during rooting in a propagation environment. Our objective was to quantify the efficacy of spray applications of the plant growth regulators (PGRs) benzyladenine (BA) and/or gibberellic acid (GA) at various stages in propagation to reduce lower-leaf senescence and evaluate effects on subsequent rooting. In Expt. 1, cuttings of ‘Patriot White’ geraniums were harvested and treated with BA (2.5 or 5.0 mg·L−1), BA + GA4+7 (2.5 or 5.0 mg·L−1 each), or GA3 (0.5 or 2.0 mg·L−1) either before or after a 2-day storage period simulating commercial shipping. Post-shipment application of all PGRs eliminated leaf yellowing compared with cuttings treated pre-shipment, but rooting was inhibited. In Expt. 2, the promotion of rooting from a rooting hormone preceding treatment with BA (1.25 to 5.0 mg·L−1), BA+GA4+7 (1.25 to 5.0 mg·L−1 each), or GA3 (0.25 to 2.0 mg·L−1) was evaluated on ‘Patriot White’ geranium cuttings after a 2-day simulated shipping. Applying rooting hormones increased the percentage of fully rooted cuttings treated with BA and/or GA from 16.4% to 51.8%. In Expt. 3, cuttings of different geranium cultivars from a commercial producer varied in susceptibility and suppression of leaf yellowing after BA + GA4+7 applications. We conclude that foliar applications of BA + GA4+7 can suppress lower-leaf senescence and rooting during propagation of some geranium cultivars, and the inhibition of rooting can be at least partially overcome with an application of rooting hormone.

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1‐Methylcyclopropene: Mode of Action and Relevance in Postharvest Horticulture Research

Schotsmans¹,

Prange²,

Binder³

2009

Horticultural Reviews

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Effect of 1-MCP on the Postharvest Performance of Un-Rooted Poinsettia Cuttings

Cited by 7 publications

References 0 publications

Effect of Time of Harvest on Postharvest Leaf Abscission in Lantana (Lantana camara L. ‘Dallas Red’) Unrooted Cuttings

Effect of Time of Harvest on Postharvest Leaf Abscission in Lantana (Lantana camara L. ‘Dallas Red’) Unrooted Cuttings

Exogenous Applications of Benzyladenine and Gibberellic Acid Inhibit Lower-leaf Senescence of Geraniums during Propagation

1‐Methylcyclopropene: Mode of Action and Relevance in Postharvest Horticulture Research

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