Effect of ethylene inhibitors on postharvest life of Lilium cut flowers.

The orchid Oncidium varicosum is a tropical plant with significant commercial value due to the beauty of its yellow inflorescences. Several authors have observed a reduction in the water content of cut flowers, consequently, wilting and senescence of petals are the main reasons for the termination of the decorative life of cut flowers. In this research, we studied the effects of several chemical compounds on the postharvest life of cut inflorescences of Oncidium varicosum 'Samurai'. These chemicals are as follows: sucrose (5%) plus 8-hidroxiquinoline citrate (8-HQC) (100 mg L-1) plus silver nitrate (AgNO3) (50 mg L-1); sucrose (5%) plus citric acid (75 mg L-1); quaternary ammonia at 30% (50 mg L-1); and sucrose (5%) plus quaternary ammonia at 30% (50 mg L-1). The highest values for average of relative water content, reducing carbohydrates and soluble sugars were recorded in the flowers treated with the sucrose (5%) plus 8-HQC (100 mg L-1) plus AgNO3 (50 mg L-1) solution. A reduction in color intensity occurred at 12 days postharvest in all treatments and the carotenoid content was reduced to the greatest extent in flowers maintained in distilled water. The lowest numbers of open flowers were observed at 12 and 15 days in the distilled water and quaternary ammonium treatments, being that the others treatments favored the anthesis. The Oncidium inflorescences treated with sucrose plus HQC plus AgNO3 demonstrated a higher number of open flowers and reached the longest longevity (22 days).

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Water Loss Changes of Antirrhinum majus L. Cut Flowers as Influenced by Genotype

HortScience ◽

10.21273/hortsci.32.3.482g ◽

1997 ◽

Vol 32 (3) ◽

pp. 482G-483

Author(s):

Dennis P. Stimart ◽

Kenneth R. Schroeder

Keyword(s):

Water Loss ◽

Deionized Water ◽

Antirrhinum Majus ◽

Fluorescent Light ◽

Rapid Decline ◽

Open Area ◽

Cut Flowers ◽

Flowering Stem ◽

Postharvest Life

Cut flowers of a short(S) lived (3 days) inbred, a long(L) lived (15 days) inbred and their hybrid (F1, 7.3 days) of Antirrhinum majus L. were evaluated for water loss when held in deionized water under continuous fluorescent light at 25°C. Flowering stems for water loss evaluation were harvested when the basal five to six florets expanded. Cut stems were placed in narrowed-necked bottles with the open area between the stem and bottle sealed with Parafilm. Stem weight and water weight in the bottle were taken every 24 h. Water loss evaluation was continued until 50% of the open florets on the flowering stem wilted or turned brown. Overall, water loss from all accessions was highest 24 h postharvest, declined rapidly between 24 to 96 h, and remained unchanged throughout the remainder of postharvest life. Between 24 to 96 h, the slope of the line for water loss was greatest for L, least for S, and intermediate for the F1. It appears that longest postharvest life of A. majus is associated with the most rapid decline of water loss immediately postharvest to a level, which remains constant.

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Calcium Chelated with Amino Acids Improves Quality and Postharvest Life of Lisianthus (Eustoma grandiflorum cv. Cinderella Lime)

HortScience ◽

10.21273/hortsci.50.9.1394 ◽

2015 ◽

Vol 50 (9) ◽

pp. 1394-1398 ◽

Cited By ~ 4

Author(s):

Reza Saeedi ◽

Nematollah Etemadi ◽

Ali Nikbakht ◽

Amir H. Khoshgoftarmanesh ◽

Mohammad R. Sabzalian

Keyword(s):

Amino Acids ◽

Amino Acid ◽

Dry Mass ◽

Production Quality ◽

Control Treatment ◽

Cut Flowers ◽

Eustoma Grandiflorum ◽

Postharvest Life ◽

Calcium Sources ◽

Nutrient Solutions

Lisianthus is one of the most important specialty cut flowers in the world. Various greenhouse conditions and inadequate evapotranspiration can disturb the transport of calcium and impair its uptake by plants. This study aimed to compare the effects of calcium amino acid chelates and calcium chloride (CaCl2) on flower production, quality, and postharvest life of cut ‘Cinderella Lime’ lisianthus. Therefore, nutrient solutions containing calcium amino acid chelates (1%) were prepared using calcium and equal concentrations of lysine, threonine, or methionine. The control treatment was a solution without amino acids and calcium. Calcium concentrations of flowering stems were significantly higher in plants treated with calcium amino acid chelates than those treated with amino acids or the control treatment. Treatment with calcium methionine chelate led to significantly higher flower numbers compared with treatment with free amino acids and the control treatment. Moreover, calcium amino acid chelates effectively improved the fresh and dry mass of the flowering stems in comparison with the control plants. In summary, among all calcium sources, calcium lysine chelate could most effectively enhance the postharvest life of lisianthus cut flowers.

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Postharvest management.

Cut flowers and foliages ◽

10.1079/9781789247602.0008 ◽

2021 ◽

pp. 342-368

Author(s):

John M. Dole ◽

James E. Faust

Keyword(s):

Production Systems ◽

Vase Life ◽

Cut Flowers ◽

Handling System ◽

Cultivar Selection ◽

Postharvest Handling ◽

Postharvest Life ◽

Postharvest Management ◽

Temperature Water

Abstract This chapter focuses on the main issues that need to be considered at every step in the postharvest handling system of cut flowers, i.e. temperature, water, sanitation, carbohydrates, disease and ethylene. Their impacts on the vase life and quality of various species are discussed as well as the importance of optimizing the postharvest life of cut flowers and foliage by proper cultivar selection before planting and the use of appropriate production systems.

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1-MCP and STS as ethylene inhibitors for prolonging the vase life of carnation and rose cut flowers

International Journal of Horticultural Science ◽

10.31421/ijhs/10/4/529 ◽

2004 ◽

Vol 10 (4) ◽

Author(s):

F. Hassan ◽

G. Schmidt ◽

Y. M. Hafez ◽

M. Pogány ◽

J. Ankush

Keyword(s):

Heavy Metal ◽

Ethylene Production ◽

Untreated Control ◽

Postharvest Quality ◽

Vase Life ◽

Ethylene Inhibitors ◽

Cut Flowers ◽

Initial Weight ◽

Silver Thiosulfate

The effect of STS and 1-MCP on the postharvest quality of carnation and rose cut flowers was studied. Cut flowers of Dianthus c..aryophyllus L. cv. Asso and Rosa hybritia cv. Baroness were treated with silver thiosulfate (STS) at 0.4 mM with sucrose at 50 g 1-t and 1-methylcyclopropene ( I -MCP) at 0.5 g m-3 for 611. Pretreatment with STS and 1-MCP significantly extended the vase life and minimized the % loss of initial weight of carnation and rose cut flowers comparing to the untreated control. The two chemicals applied inhibited the chlorophyll degradation and carbohydrate loss and hence, significantly improved the postharvest quality of carnation and rose cut flowers comparing to the control. Ethylene production by cut flowers was inhibited as a result of using these chemicals. In general, there were no differences between STS and (-MCP but the later does not have the heavy metal implications of STS treatment, and hence, using 1-MCP pretreatment for extending the vase life of carnation and rose cut flowers was recommended.

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080 Postharvest Longevity Analysis of Advance Generations in Antirrhinum majus L.

HortScience ◽

10.21273/hortsci.34.3.455a ◽

1999 ◽

Vol 34 (3) ◽

pp. 455A-455

Author(s):

William J. Martin ◽

Dennis P. Stimart

Keyword(s):

Block Design ◽

Deionized Water ◽

Antirrhinum Majus ◽

Cut Flowers ◽

Randomized Complete Block Design ◽

Postharvest Life ◽

Postharvest Longevity ◽

Fluorescent Lighting

Cut flowers of Antirrhinum majus L. (snapdragon) P1, P2, F1, F3, and F2 × F2 plants were harvested after the first five flowers were open and were evaluated for postharvest longevity to further evaluate genes conditioning postharvest longevity. F3 progeny evaluated were derived by selfing F2 selections of long keeping, mid-range, and short keeping types. F2 × F2 progeny evaluated were derived from crosses within and between postharvest longevity categories. Populations for evaluation were grown in the greenhouse in winter 1998-1999 in a randomized complete-block design according to standard forcing procedures. Thirty plants of each genotype were held in the laboratory in deionized water under continuous fluorescent lighting at 22 °C for postharvest assessment. The end of postharvest life was defined as 50% of the flowers drying, browning, or wilting. Data will be presented on postharvest longevity and allelic relationships within populations.

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Postharvest Evaluation of Fresh Cut Sunflower Cultivars

HortScience ◽

10.21273/hortsci.31.4.637b ◽

1996 ◽

Vol 31 (4) ◽

pp. 637b-637

Author(s):

Karen L.B. Gast

Keyword(s):

Market Share ◽

Commercial Production ◽

Cut Flowers ◽

Fresh Flower ◽

Acceptable Range ◽

Postharvest Life ◽

Fresh Cut ◽

New Cultivars

Specialty cut flowers are gaining a greater market share of the floral industry. One species that seems to be losing its fad status and again becoming a market mainstay are sunflowers. In response to that demand seed companies are introducing new sunflower cultivars. Little work has been done to evaluate and compare the postharvest life of these new cultivars. A study was conducted Summer 1995 to determine the postharvest life of several cultivars using both water and floral preservatives. Less than half of the cultivars evaluated had an acceptable commercial postharvest life when only water was used. When fresh flower preservatives were used only three of the cultivars evaluated had an unacceptable postharvest life. The addition of floral preservatives significantly increased the postharvest life of more than a third of the cultivars evaluated, but only two thirds of those had their postharvest life increased into the acceptable range. Cultivars found to have an acceptable postharvest life include a wide variety of colors, plant heights and pollenless flowers, giving the grower a wide choice of cultivars for commercial production.

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Genotype of Flowering Stems of Antirrhinum majus L. Influences Ethylene Evolution and Fresh Weight Changes Postharvest

HortScience ◽

10.21273/hortsci.31.4.617d ◽

1996 ◽

Vol 31 (4) ◽

pp. 617d-617

Author(s):

Dennis P. Stimart ◽

Kenneth R. Schroeder

Keyword(s):

Weight Change ◽

Deionized Water ◽

Antirrhinum Majus ◽

Cut Flowers ◽

Weight Changes ◽

Fresh Weight ◽

Ethylene Evolution ◽

Postharvest Life ◽

Final Amount

Cut flowers of a short (S)-lived (3-day) inbred, a long (L)-lived (15-day) inbred and their hybrid (F1, 7.3 days) of Antirrhinum majus L. were evaluated for fresh weight and ethylene evolution change postharvest when held in deionized water. Fresh weight change of all accessions increased 1 day postharvest then declined over the remainder of postharvest life. The loss of fresh weight was most rapid for S and less rapid for F1 and least rapid for L. Ethylene release postharvest for S and F1 started on day 1, but for L ethylene release started on day 9. Once ethylene evolution began it continued through postharvest life. On the last day of postharvest life, ethylene release from S and F1 were similar, but L was twice the level as S and F1. It appears that a slower decline in fresh weight, a delay in outset of ethylene release and higher final amount of ethylene release at senescence are heritable and associated with longer keeping time of A. majus.

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Longevity of Buddleia Not Affected by Silver Thiosulfate Pulse

HortScience ◽

10.21273/hortsci.30.4.835a ◽

1995 ◽

Vol 30 (4) ◽

pp. 835A-835

Author(s):

B.K. Behe ◽

T.S. Krentz

Keyword(s):

Deionized Water ◽

Ethylene Inhibitors ◽

Fresh Weight ◽

Silver Thiosulfate ◽

Ethylene Sensitivity ◽

Wide Range ◽

Postharvest Life

Research shows differences among flowering species in ethylene sensitivity in response to ethylene inhibitors, including silver thiosulfate. Buddleia sp. is an arching shrub with spike-shaped inlforescences in a wide range of colors, including pink, purple, yellow, and white. The objective of this study was to determine optimal pulsing time of silver thiosulfate to maximize the postharvest life of five cultivars of Buddleia sp.: `Empire Blue', `Lochinch', `Nanho Blue', `Pink Delight', `Royal Red', and `Sungold'. Flower stems harvested at 1/3 to 2/3 development were transported to a simulated consumer environment. Stems were recut under water and pulsed for 0, 30, 60, and 120 min prior to placing them in a solution of deionized water and Floralife at 10 3 g·liter–1. No silver thiosulfate treatment was more effective than the control at extending vaselife, increasing floret development, or increasing stem fresh weight.

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Sucrose Improves the Postharvest Life of Cut Flowers of a Hybrid Limonium

HortScience ◽

10.21273/hortsci.30.5.1058 ◽

1995 ◽

Vol 30 (5) ◽

pp. 1058-1060 ◽

Cited By ~ 19

Author(s):

Motoaki Doi ◽

Michael S. Reid

Keyword(s):

Gibberellic Acid ◽

Quaternary Ammonium ◽

Deionized Water ◽

Vase Life ◽

Pulse Treatment ◽

Cut Flowers ◽

Disinfectant Solution ◽

Postharvest Life ◽

Bud Opening

Regardless of their maturity at harvest, the vase life of cut inflorescences of the hybrid Limonium `Fantasia' placed in deionized water was 4 to 5 days. A vase solution containing Physan (a quaternary ammonium disinfectant solution) at 200 μl·liter–1 and 20 g sucrose/liter not only prolonged the longevity of individual florets but also promoted bud opening so that the vase life of cut inflorescences extended to 17 days. Pulse treatment with 100 g sucrose/liter in combination with Physan at 200 μl·liter–1 for 12 hours partially substituted for a continuous supply of sucrose. Including 30 mg gibberellic acid/liter in the vase solution was without benefit.

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