Post‐pollination Phenomena in Orchid Flowers

Arditti, Joseph; Flick, Brigitta H.; Jeffrey, David C.

doi:10.1111/j.1469-8137.1971.tb02532.x

Cited by 22 publications

(21 citation statements)

References 32 publications

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“…Samarkand (Dos Pueblos Orchid Company, Goleta, California) were treated, observed, and analysed as described previously (Arditti et al, 1971;Arditti and Knauft, 1969). Hormones were applied in aqueous solutions, 3% agar (Arditti et al, 1971), or lanolin pastes (Arditti and Knauft, 1969). Increases in width 5 mm below the anther cap (Arditti and Knauft, 1969) were used as a measure of columnswelling (Table 1).…”

Section: Methodsmentioning

confidence: 99%

“…A number of hormones are known to participate in fruit-set and development (Addicott and Lyon, 1969;Crane, 1964Crane, ,1965Crane, ,1969Letham, 1967Letham, , 1969 and can initiate postpollination symptonK which may vary among orchid genera or species, and with each hormone (Arditti, Flick and Jeffrey, 1971;Arditti and Knauft, 1969;Dolcher, 1959Dolcher, , 1961Dolcher, , 1967Hayes, 1968;Heslop-Harrison, 1957;Jancke, 1915;Ringstrom, 1968;Roux, 1954) but are definite and easily observable. Orchid flowers are, therefore, not only unique in their structure, beauty and pollination mechanisms (Dodson, 1967;van der Pijl and Dodson, 1966), but also exceedingly interesting in their responses to pollination or hormone treatments (Arditti, 1969;Arditti et al, 1971;Arditti and Knauft, 1969).…”

Section: Introductionmentioning

confidence: 99%

“…Orchid flowers are, therefore, not only unique in their structure, beauty and pollination mechanisms (Dodson, 1967;van der Pijl and Dodson, 1966), but also exceedingly interesting in their responses to pollination or hormone treatments (Arditti, 1969;Arditti et al, 1971;Arditti and Knauft, 1969).…”

Section: Introductionmentioning

confidence: 99%

“…Hormones or pollination bring about flower wilting, loss of proteins from sepals and petals (Schxunacher, 1931), cessation of scent production and, in some cases, of nectar exudation (Wiefelputz, 1970), swelling and loss of curvature by columns, flow of water and minerals into colunms or ovaries (Oertii and Kohl, i960), stigmatic closure, production of anthocyanins, and other pigments, by columns and labella ('lips'), starch formation in the ovary (Seshagiriah, 1941), as well as loss of turgidity and colour changes in calli (Arditti et al, 1971;Arditti and Knauft, 1969;Burg and Dijkman, 1967;Dodson, 1967;van der Pijl and Dodson, 1966). Auxins (Arditti and Knauft, 1969;Hsiang, 1951a, b;Hubert and Maton, 1939), ethylene (Akamine, 1963;Alcamine and Sakamoto, 1951;Burg and Dijkman, 1967;Davidson, 1949;Fischer, 1950;Lindner, 1946) and ABA (Arditti et al, 1971) can all initiate some post-pollination symptoms.…”

Section: Introductionmentioning

confidence: 99%

“…Auxins (Arditti and Knauft, 1969;Hsiang, 1951a, b;Hubert and Maton, 1939), ethylene (Akamine, 1963;Alcamine and Sakamoto, 1951;Burg and Dijkman, 1967;Davidson, 1949;Fischer, 1950;Lindner, 1946) and ABA (Arditti et al, 1971) can all initiate some post-pollination symptoms.…”

Section: Introductionmentioning

confidence: 99%

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Post‐pollination Phenomena in Orchid Flowers

1971

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SUMMARYNAA, in concentrations exceeding o.oi /Ug/flower, initiates post-pollination phenomena in Cymbidium (Orchidaceae) flowers similar to those brought on by pollination. These include stigmatic closure, swelling and loss of curvature of the column, wilting of the perianth, deformation of the calli, and anthocyanin production. Applications of relatively high concentrations of GA3 induce post-pollination effects which, except for anthocyanin production, are less intense than those brought about by auxin. Kinetin does not induce post-poUination phenomena, but in concentrations of 10 fig and 100 ^g/flower causes slight stigmatic closure, and in some combinations with NAA it inhibits wilting. Stigmatic closure, loss of column curvature and changes in calli, all of them NAA induced, cannot be prevented by simultaneous applications of kinetin, GAj or ABA. Some combinations of NAA and GA3 lowered anthocyanin content relative to separate treatments with either hormone. Flowers treated with GA3 plus kinetin wilted slightly in most cases, but columns did not swell and retained their curvature; calli did not develop colour and anthocyanin content was generally equal to that of flowers given only kinetin. GA3 and ABA when applied together brought on symtoms which were similar to those caused by ABA only but anthocyanin content was lower than in flowers treated with either hormone alone. This is also true for ABA-kinetin mixtures, but intensities of the effects are different and, with certain concentration ratios, stigmatic closure occurs. The phenomena are discussed relative to fruit-set, seed formation, anthoeyanin production, senescence, orchid biology and the possible mode of action of each hormone.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Post‐pollination Phenomena in Orchid Flowers

1971

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Postharvest Biology and Technology of Cut Flowers and Potted Plants

Reid¹,

Jiang²

2012

Horticultural Reviews

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The relatively brief postharvest life of most cut flowers and potted flowering plants can be extended by a range of technologies. Studies have shown that vase life is negatively correlated with respiration after harvest, so prompt cooling to the lowest safe storage temperature is a key to long-distance transport of these perishable crops. Forced air cooling is the method of choice for cut flowers, and vacuum cooling has been shown to be very effective for cooling potted plants. In contrast to some other horticultural crops, controlled and modified atmospheres seem to have little effect on petal respiration, and these techniques have not proved commercially useful in the marketing of many cut flowers. Low temperatures are also important in managing the effect of other factors contributing to early senescence, including water loss, the effects of ethylene, leaf yellowing, and the growth of diseases, particularly caused by Botrytis cinerea. Ornamentals originating in the tropics and subtropics cannot be cooled below 10 C because they rapidly show the symptoms of chilling injury. Chemical strategies to improve the life of ornamentals include the application of abscisic acid to reduce water loss, particularly in potted and bedding plants, pretreatment with the volatile ethylene inhibitor 1-methylcyclopropene (1-MCP) to prevent the 1

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Pollination‐Induced Changes in the Morphology and Physiology ofDendrobiumOrchid Flowers Prior to Fertilization: The Roles of Ethylene and Auxin

Doorn

Ketsa

2005

Editorial Board

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Post‐pollination Phenomena in Orchid Flowers

Cited by 22 publications

References 32 publications

Post‐pollination Phenomena in Orchid Flowers

Post‐pollination Phenomena in Orchid Flowers

Postharvest Biology and Technology of Cut Flowers and Potted Plants

Pollination‐Induced Changes in the Morphology and Physiology ofDendrobiumOrchid Flowers Prior to Fertilization: The Roles of Ethylene and Auxin

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