scholarly journals 347 1-MCP and CO2 Reduction of Ethylene Response on Snapdragon

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 503B-503
Author(s):  
R. St.Hill ◽  
D.P. Murr
Keyword(s):  
Co2 Reduction ◽  
Vase Life ◽  
Rapid Decline ◽  
Ethylene Receptor ◽  
Cut Flowers ◽  
Ethylene Response ◽  
Receptor Sites ◽  
Limited Effectiveness ◽  
Ethylene Action ◽  
Flower Abscission

Recent advances in technology have made the snapdragon, Antirrhinum majus L., a promising florist crop in North America and potentially on the Ontario market. CO2 is a known inhibitor of ethylene action, but its effects tend to be difficult to interpret based on the variable responses of plants to this gas. Recently, a gaseous ethylene analog has been shown to inhibit certain ethylene responses of cut flowers, such as wilting in carnations and flower abscission of cut phlox. This cyclic olefin, 1-methylcyclopropene (1-MCP), is thought to bind irreversibly to the ethylene receptor sites, thereby preventing or delaying ethylene responses. In the experiments undertaken, the potential of CO2 and 1-MCP were investigated for their ability to enhance vase life and to reduce shattering and wilting of snapdragons. Flowers were sealed in ≈0.2-m3 chambers encased in 6-mil polyethylene and exposed to elevated CO2 (5% or 10%) or 1-MCP (20-200 nL/L) for 6 to 24 h at 20 °C. The flowers were then exposed to continuous ethylene of 0-20 μL/L. Following exposure to 5 or 20 μL/L ethylene, 1-MCP reduced shattering ≈2- to 3-fold compared to CO2 treatment. 1-MCP did not prevent the wilting response but delayed it by ≈2 days. CO2-treated flowers exhibited a more rapid decline in net percent open florets from days 3 to 5 post-treatment. Despite the ability of 1-MCP to reduce shattering, in the absence of exposure to continuous ethylene, it has limited effectiveness on wilting compared to CO2.

scholarly journals Postharvest physiology of cut flowers

2021 ◽  
Author(s):  
Lucas Cavalcante da Costa ◽  
Fernanda Ferreira de Araujo ◽  
Wellington Souto Ribeiro ◽  
Mirelle Nayana de Sousa Santos ◽  
Fernando Luiz Finger
Keyword(s):  
Ethylene Production ◽  
Respiratory Activity ◽  
Carbon Dioxide Concentration ◽  
Ethylene Biosynthesis ◽  
Flower Senescence ◽  
Vase Life ◽  
Cut Flowers ◽  
Wide Range ◽  
Ethylene Action ◽  
And Control

Abstract The longevity of cut flowers is limited by their ephemeral nature and by multiple stresses. Impairment in water uptake, depletion of stored carbohydrates, increases in both respiratory activity and ethylene production are signatures of flower senescence. A wide range of techniques is available to extend flower preservation, including the use of flower preservative solutions, ethylene action inhibitors, growth regulators, and control of temperature and flower dehydration. The use of sucrose in pulsing solution, or as a component of vase solution, extends the vase life of flowers by either improving water balance and energy or delaying the senescence via reductions in ethylene biosynthesis. Inhibitors of ethylene production and action affect the longevity by extending the vase life of some ethylene-sensitive flowers. Flowers have intense respiratory activity, which may deplete the limited reserves of carbohydrates in the tissues. Lower temperatures markedly reduce both carbon dioxide concentration and ethylene production as well as its action. However, chilling-sensitive flowers, such as bird-of-paradise, heliconia, orchid, and ginger, cannot be stored below 10 to 13°C due to the intense development of tissue discoloration.

scholarly journals Postharvest Characteristics of cut Inflorescences of Lupinus havardii

1995 ◽  
Vol 5 (3) ◽  
pp. 247-249 ◽  
Author(s):  
Tim D. Davis ◽  
Wayne A. Mackay ◽  
Narendra Sankhla
Keyword(s):  
Geographic Range ◽  
Vase Life ◽  
Cut Flowers ◽  
Postharvest Storage ◽  
Breeding Lines ◽  
Silver Thiosulfate ◽  
Big Bend ◽  
Flower Abscission

Big Bend bluebonnet (Lupinus havardii Wats.) is native to a narrow geographic range in southwestern Texas and produces attractive blue inflorescences (racemes) that may be used as cut flowers. Several crops were produced in the greenhouse to determine postharvest-characteristics of the cut inflorescences. Without any postharvest conditioning treatments, the inflorescences held in water had an average vase life of about 7 days. During this period, an average of 13 flowers abscised per inflorescence. When preconditioned for 4 hours in 40 to 160 mg·liter−1 silver thiosulfate (STS), vase life increased to 10 to 12 days and fewer than three flowers abscised per inflorescence. A commercial floral preservative (Oasis) had no effect on flower abscission or vase life of STS-treated inflorescences. Flower abscission and vase life were the same whether STS-treated inflorescences were placed in floral foam moistened with water or in water alone. Storing STS-preconditioned inflorescences in water at 5C for 72 hours did not affect flower abscission or vase life compared to the unstored control. Dry postharvest storage at 5C for 72 hours caused noticeable wilting, but, on dehydration, these inflorescences still had a vase life of about 8 days. Postharvest characteristics of pink-and white-flowered breeding lines were the same as for the blue-flowered line. These results indicate that cut inflorescences of L. havardii have desirable postharvest qualities and can be stored for up to 72 hours without seriously limiting vase life.

scholarly journals Effects of Hormone Treatments on Cut Flower Opening and Senescence in Wintersweet (Chimonanthus praecox)

HortScience ◽  
2015 ◽  
Vol 50 (9) ◽  
pp. 1365-1369 ◽  
Author(s):  
Shunzhao Sui ◽  
Jianghui Luo ◽  
Daofeng Liu ◽  
Jing Ma ◽  
Weiting Men ◽  
...  
Keyword(s):  
Vase Life ◽  
Cut Flower ◽  
Related Gene ◽  
Cut Flowers ◽  
Flower Opening ◽  
Delayed Senescence ◽  
Ethylene Action ◽  
Garden Plant ◽  
Chimonanthus Praecox

Wintersweet (Chimonanthus praecox) is a woody garden plant with fragrant flowers, which blooms in deep winter. The vase life of fresh cut flowers is 8–9 days. We applied ethylene and 1-methylcyclopropene (1-MCP; an ethylene action inhibitor) to test the role of ethylene in flower opening and senescence. In addition, abscisic acid (ABA), gibberellic acid (GA3), two cytokinins, 6-benzylaminopurine (6-BA), and zeatin (ZT) were also applied. The expression pattern of CpSRG1, a senescence-related gene, was analyzed. Ethylene treatment accelerated flower opening and senescence, decreasing vase life by 2.1 days. It also decreased flower break strength, indicating the induction of abscission. 1-MCP slowed opening, delayed senescence, and prolonged vase life by 2.6 days. Ethylene dramatically induced the expression of the CpSRG1 gene, while 1-MCP suppressed it. ZT promoted flower opening and increased vase life by 1.6 days. It suppressed the expression of CpSRG1. 6-BA, GA3, or ABA had no significant effect on flower opening and senescence of wintersweet.

scholarly journals Characterizing the effects of different chemicals on stem bending of cut snapdragon flower

Plant Methods ◽  
2022 ◽  
Vol 18 (1) ◽  
Author(s):  
May Thu Soe ◽  
Aung Htay Naing ◽  
Soo Rin Kim ◽  
Chang Kil Kim
Keyword(s):  
Plant Growth ◽  
Lignin Content ◽  
Shoot Elongation ◽  
Nitric Oxide Donor ◽  
Vase Life ◽  
Cut Flowers ◽  
Stem Bending ◽  
Ethylene Action ◽  
Stem Curvature

Abstract Background This study investigated the effects of ethylene release compounds (ethephon), ethylene-action inhibitors (silver thiosulfate: STS), and nitric oxide donor (sodium nitroprusside: SNP) on stem bending of snapdragon flowers. Moreover, the effects of plant growth supplements [6-benzyladenine (BA), gibberellic acid 3 (GA3), and calcium chloride (CaCl2)] on the stem bending were also extensively investigated. Results Ethephon completely prevented stem bending until 9 days after treatment (9 DAT). STS exhibited the highest bending rate, while SNP did not significantly affect the bending compared to the controls. The bending results were associated with the results of stem curvature, relative shoot elongation, ethylene production, and lignin content, that are involved in the stem bending mechanism. This was proven by the expression analysis of genes involved in ethylene and lignin biosynthetic pathways. The addition of plant growth supplements slightly or significantly delayed stem bending in the treatments (control, SNP, and STS) and significantly reduced petal senescence in ethephon at 9 DAT. Conclusion These results show the preventive role of ethephon in the stem bending of cut snapdragon. Moreover, the combination of ethephon with supplements also provided information that could guide the development of strategies to delay stem bending in other cut flowers that undergo serious bending during a short vase life.

Effects of 1-MCP on the vase life and ethylene response of cut flowers

1995 ◽  
Vol 16 (1) ◽  
pp. 93-97 ◽  
Author(s):  
Margrethe Serek ◽  
Edward C. Sisler ◽  
Michael S. Reid
Keyword(s):  
Vase Life ◽  
Cut Flowers ◽  
Ethylene Response

scholarly journals 24-Epibrasinolide Modulates the Vase Life of Lisianthus Cut Flowers by Modulating ACC Oxidase Enzyme Activity and Physiological Responses

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 995
Author(s):  
Mohammad Darvish ◽  
Habib Shirzad ◽  
Mohammadreza Asghari ◽  
Parviz Noruzi ◽  
Abolfazl Alirezalu ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Water Absorption ◽  
Ethylene Production ◽  
Oxidase Activity ◽  
Acc Oxidase ◽  
Postharvest Quality ◽  
Vase Life ◽  
Dependent Manner ◽  
Cut Flowers ◽  
Oxidase Enzyme

Ethylene is the most important factor playing roles in senescence and deterioration of harvested crops including cut flowers. Brassinosteroids (BRs), as natural phytohormones, have been reported to differently modulate ethylene production and related senescence processes in different crops. This study was carried out to determine the effects of different levels of 24-epibrassinolide (EBL) on ACC oxidase enzyme activity, the final enzyme in ethylene biosynthesis pathway, vase life, and senescence rate in lisianthus cut flowers. Harvested flowers were treated with EBL (at 0, 3, 6, and 9 µmol/L) and kept at 25 °C for 15 days. The ACC oxidase activity, water absorption, malondialdehyde (MDA) production and vase solution absorption rates, chlorophyll and anthocyanin contents, and the vase life of the flowers were evaluated during and at the end of storage. EBL at 3 µmol/L significantly (p ≤ 0.01) enhanced the flower vase life by decreasing the ACC oxidase activity, MDA production and senescence rates, and enhancing chlorophyll and anthocyanin biosynthesis and accumulation, relative water content, and vase solution absorption rates. By increasing the concentration, EBL negatively affected the flower vase life and postharvest quality probably via enhancing the ACC oxidase enzyme activity and subsequent ethylene production. EBL at 6 and 9 µmol/L and in a concentration dependent manner, enhanced the ACC oxidase activity and MDA production rate and decreased chlorophyll and anthocyanin accumulation and water absorption rate. The results indicate that the effects of brassinosteroids on ethylene production and physiology of lisianthus cut flowers is highly dose dependent.

scholarly journals Blue Light Improves Vase Life of Carnation Cut Flowers Through Its Effect on the Antioxidant Defense System

2020 ◽  
Vol 11 ◽  
Author(s):  
Mostafa Aalifar ◽  
Sasan Aliniaeifard ◽  
Mostafa Arab ◽  
Mahboobeh Zare Mehrjerdi ◽  
Shirin Dianati Daylami ◽  
...  
Keyword(s):  
Blue Light ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Vase Life ◽  
Defense System ◽  
Cut Flowers

Effects of calcium oxide nanoparticles on vase life of gerbera cut flowers

2022 ◽  
Vol 291 ◽  
pp. 110532
Author(s):  
Alberto García-González ◽  
Lluvia de Abril Alexandra Soriano-Melgar ◽  
María Luisa Cid-López ◽  
Gladis Yakeline Cortez-Mazatán ◽  
Esmeralda Mendoza-Mendoza ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Vase Life ◽  
Oxide Nanoparticles ◽  
Cut Flowers

scholarly journals Improving the Keeping Quality and Vase Life of Cut Alstroemeria Flowers by Pre and Post-harvest Salicylic Acid Treatments

2013 ◽  
Vol 5 (3) ◽  
pp. 364-370 ◽  
Author(s):  
Elnaz SOLEIMANY-FARD ◽  
Khodayar HEMMATI ◽  
Ahmad KHALIGHI
Keyword(s):  
Salicylic Acid ◽  
Water Balance ◽  
Chlorophyll Content ◽  
Water Loss ◽  
Vase Life ◽  
Total Chlorophyll ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Total Chlorophyll Content ◽  
Keeping Quality

Keeping quality and length of vase life are important factors for evaluation of cut flowers quality, for both domestic and export markets. Studding the effect of pre- and post-harvest salicylic acid applications on keeping quality and vase life of cut alstroemeria flowers during vase period is the approach taken. Aqueous solutions of salicylic acid at 0.0 (with distilled water), 1, 2 and 3 mM were sprayed to run-off (approximately 500 mL per plant), about two weeks before flowers harvest. The cut flowers were harvested in the early morning and both of cut flowers treated (sprayed) and untreated were kept in vase solutions containing salicylic acid at 0.0 (with distilled water), 1, 2 and 3 mM. Sucrose at 4% was added to all treatments as a base solution. The changes in relative fresh weight, water uptake, water loss, water balance, total chlorophyll content and vase life were estimated during vase period. The results showed that the relative fresh weight, water uptake, water balance, total chlorophyll content and vase life decreased significantly while the water loss increased significantly during experiment for all treatments. A significant difference between salicylic acid and control treatments in all measured parameters is observed. During vase period, the salicylic acid treatments maintained significantly a more favourable relative fresh weight, water uptake, water balance, total chlorophyll content and supressed significantly water loss, as compared to control treatment. Also, the results showed that the using salicylic acid increased significantly the vase life cut alstroemeria flowers, over control. The highest values of measured parameters were found when plants were treated by pre + post-harvest application of salicylic acid at 3 mM. The result revealed that the quality attributes and vase life of cut alstroemeria flowers were improved by the use of salicylic acid treatment.

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