The Use of Carbon Dioxid for Prolonging the Life of Cut Flowers, With Special Reference to Roses

Thornton, N. C.

doi:10.1002/j.1537-2197.1930.tb09565.x

Cited by 12 publications

(4 citation statements)

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“…With these results, we can emphasize that temp control combined with immature harvesting remain the most economical and easily manipulated means for overcoming ethylene effects in storage or in the marketing process. Controlled atmosphere storage has not been shown to be economically valid4 (6 , 7), although increased CO2 levels and low O2 reduce endogenous C2 H4 production and effects (15,16,20,22). Vacuum storage as proposed for some crops (2) does not appear feasible (unpublished data).…”

Section: Resultsmentioning

confidence: 99%

Effect of Ethylene on Carnation Keeping Life1

Barden

Hanan

1972

J. Amer. Soc. Hort. Sci.

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Carnation (Dianthus caryophyllus L., cv. White Sim) buds and flowers were exposed to various ethylene concn for different periods and at different temp. A dosage term, ppb-hr, was used to evaluate C2H4 concn and exposure time. Keeping life was highly correlated with dosage, depending upon temp. Buds were less susceptible than flowers to C2H4 injury at all temp, with no significant loss of keeping life at the highest dosages and a temp of 1.7°C. Open flowers exhibited zero keeping life with 47,000 ppb-hr at the same temp. At 21.1°C, zero keeping life was obtained with mature flowers at 4,400 ppb-hr, whereas buds required 8,400 ppb-hr. Mathematical relationships showed the effect of increasing C2H4 dosages on rate of keeping loss to be linear. Over a dosage range of 103 to 105 ppb-hr, the effect of temp on open flowers was linear, and slightly curvilinear on buds. Increasing exposure temp from 1.7 to 21.1°C increased the effect of ethylene nearly 1,000 times on open flowers.

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Section: Resultsmentioning

confidence: 99%

Effect of Ethylene on Carnation Keeping Life1

Barden

Hanan

1972

J. Amer. Soc. Hort. Sci.

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“…sp. ), and snapdragons (Antirrhinum majus L.) (Thornton, 1930) has been extended by various combinations of CA treatments. Thus, the objectives of this research were to test the effectiveness of insecticidal controlled atmospheres for control of whitefly on poinsettias and to evaluate the effects of the treatments on poinsettia.…”

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confidence: 99%

Responses of Whitefly and Poinsettias to Insecticidal Controlled Atmospheres

Han¹,

Konieczny²

2000

jashs

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Eggs, larvae, pupae, and adult stages of greenhouse whitefly (Trialeurodes vaporarium Westwood) and silverleaf whitefly (Bemisia argentifolii Bellows & Perring) were exposed to insecticidal controlled atmospheres at 20 °C or 30 °C. Mortality data were calculated for each stage and results demonstrated that reduced-O2 atmospheres (an O2 level of <2 μL·L-1 balance in N2) resulted in faster and higher mortality than elevated-CO2 atmospheres (25% or 50% CO2). Responses, from the least to most tolerant stage was adult < larvae < eggs = pupae, regardless of the species of whitefly and treatment temperature. At 20 °C, treatment time required to kill >90% of adults, larvae, and eggs and pupae was 2, 4, and 8 hours, respectively. Increasing the treatment temperature from 20 to 30 °C reduced the treatment time to one-half that of 20 °C. Treatment time required to achieve complete elimination of the insects also caused phytotoxicity symptoms on poinsettias (Euphorbia pulcherrima Willd. ex Klotzsch), thus, limiting use of insecticidal controlled atmospheres as the sole means for managing whitefly.

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“…Possibly more emphasis and importance should be attributed to the high carbon dioxide and low oxygen content within the sealed containers. Moderately high carbon dioxide has been found beneficial in flower storage (6).…”

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confidence: 99%

Problems in the Storage of Cut Carnations

Neff

1939

Plant Physiol.

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Cut flowers are commonly stored with the stems in water. Such treatment results in a high turgor pressure within the plants which may be augmented by high humidity in the storage room. Preliminary experiments (3) indicated that the life of flowers is shortened by a liberal water supply during storage. Materials and methods Comparisons were made between flowers stored in water and flowers stored "dry pack." When removed to ordinary temperature and humidity conditions, keeping qualities were observed and compared with fresh flowers. The flowers were arbitrarily classed as "desirable" until the edges of the petals first began to dry, or any other noticeable defect appeared. "Percentage desirable" as used in the following graphs indicates the number of "desirable " blooms expressed in percentage. The average number of flowers used in each lot was about nine. "Dry pack" indicates storage without water. Flowers in "dry pack" were not placed in water until removed from storage. The methods of dry packing varied considerably. Wrappings of different kinds of paper were used in an attempt to find a suitable storage condition. A more successful method consisted of storing the flowers in sealed glass or metal containers. A refinement of this procedure made possible the control of the atmosphere under bell jars. Two-hole rubber stoppers supplied with glass tubing were fitted into the openings at the tops of the bell jars. Rubber tubing fitted to the outlets and closed by means of clamps facilitated gas analysis with the HALDANE gas analyzer. The outlets were also used for aeration and the introduction of carbon dioxide. Results RELATION OF TURGOR TO THE KEEPING OF CUT CARNATIONS The following experiments bring out marked differences in the behavior of carnations stored dry and those stored with the stems in water. Fluctuations in the weights of flowers were observed and the water loss per flower recorded during the period of observation at room temperature to determine the lasting qualities. Carnations were placed in water at room temperature and humidity to determine their "desirable" length of life (fresh). Similar carnations were stored for 32 days with their stems in water. The stems were clipped 271

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The Use of Carbon Dioxid for Prolonging the Life of Cut Flowers, With Special Reference to Roses

Cited by 12 publications

References 1 publication

Effect of Ethylene on Carnation Keeping Life1

Effect of Ethylene on Carnation Keeping Life1

Responses of Whitefly and Poinsettias to Insecticidal Controlled Atmospheres

Problems in the Storage of Cut Carnations

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