Ethylene and flower longevity in Alstroemeria: relationship between tepal senescence, abscission and ethylene biosynthesis

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Ethylene and flower longevity in Alstroemeria: relationship between tepal senescence, abscission and ethylene biosynthesis.

Senescence of floral organs is broadly divided into two groups: those that exhibit sensitivity to exogenous ethylene and those that do not. Endogenous ethylene production from the former group is via a well-characterized biochemical pathway and is either due to developmental or pollination-induced senescence. Many flowers from the order Liliales are characterized as ethylene-insensitive since t...

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The role of ethylene in light control of leaf abscission im mung bean, Vigna radiata (L.) Wilczek cv Jumbo, cuttings was examined. While red light inhibits and far-red light promotes loss of break strength in abscission zones as compared with dark controls, changes in the rate of abscission could not be associated with changes in the rate of ethylene production. Reducing ethylene synthesis in t...

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Abscission of mango fruitlets as influenced by enhanced ethylene biosynthesis.

Experiments were conducted on developing fruitlet explants of two mango (Mangifera indica L.) cultivars to establish the source and dynamics of ethylene production prior to and during fruitlet abscission. Abscission of all fruits in the samples occurred at approximately 86 and 74 hours postharvest in ;Keitt' and ;Tommy Atkins,' respectively. Increased abscission began 26 hours from harvest and ...

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Role of Ethylene and 1-MCP in Flower Development and Petal Abscission in Zonal Geraniums

Geraniums are sensitive to ethylene during shipping and respond by abscising their petals. Treatment of stock plants with ethylene (ethephon) in order to increase cutting yield resulted in earlier flowering in Pelargonium × hortorum ‘Kim’ and ‘Veronica’, but did not result in increased susceptibility to petal abscission following exposure to 1.0 μL·L–1 ethylene. Treatment of ‘Kim’, ‘Veronica’, ...

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Ethylene-induced gene expression in carnation petals : relationship to autocatalytic ethylene production and senescence.

Exposure of carnation (Dianthus caryophyllus L.) flowers to ethylene evokes the developmental program of petal senescence. The temporal relationship of several aspects of this developmental program following treatment with ethylene was investigated. Exposure of mature, presenescent flowers to 7.5 microliters per liter ethylene for at least 6 hours induced petal in-rolling and premature senescen...

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ژورنال

عنوان ژورنال: Journal of Experimental Botany

سال: 2005

ISSN: 1460-2431

DOI: 10.1093/jxb/eri094