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Iftikhar Ahmad, John M. Dole, Atyab Amjad, and Sagheer Ahmad

conducted to compare the effectiveness of wet vs. dry storage in maintaining quality and vase life extension of two of the most important U.S. field-grown specialty cut species (lisianthus and zinnia) and two of the most important Pakistan cut flower species

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Farzad Nazari and Mahmoud Koushesh Saba

extend the vase life of gerbera ( Solgi et al., 2009 ) and alstroemeria ( Fazlalizadeh et al., 2013 ; Madadzadeh et al., 2013 ). Ethylene concentration in ambient atmosphere affects the vase life of cut flowers ( Jalili Marandi et al., 2011 ). Many

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David G. Tork, Neil O. Anderson, Donald L. Wyse, and Kevin J. Betts

). Perennial flax has the potential to become a new specialty cut flower for cold climates like Minnesota ( Tork et al., 2019 ), but to the best of our knowledge, there are no existing reports on vase life performance of any Linum species. Vase life studies

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Shunzhao Sui, Jianghui Luo, Daofeng Liu, Jing Ma, Weiting Men, Lu Fan, Yu Bai, and Mingyang Li

flowers, and it has a high ornamental and economic value. The shrub has also been introduced into Korea, Japan, Europe, America, and Australia ( Zhang and Liu, 1998 ). However, the vase life of cut wintersweet flowers is relatively short, and this has

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Iftikhar Ahmad and John M. Dole

metabolic processes and continued flower opening during vase life. Among acidifiers, citric acid is the most common compound and is used to lower the pH of the preservative solutions and control microbial proliferation. Citric acid has been found effective

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Ria T. Leonard, Amy M. Alexander, and Terril A. Nell

is of particular concern since it is known that high temperatures during transport or storage will reduce vase life and quality of many cut flower species and make ethylene-sensitive species more susceptible to ethylene ( Halevy and Mayak, 1973

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Dave Llewellyn, Katherine Schiestel, and Youbin Zheng

met one or more of these criteria. Vase life. Vase life trials were performed by collecting one marketable flower from each cultivar in each plot during flower harvests on 17 and 20 Jan. 2014 (trial 1), and again on 12, 14, and 18 Feb. 2014 (trial 2

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John M. Dole, Paul Fisher, and Geoffrey Njue

Several treatments were investigated for increasing vase life of cut `Renaissance Red' poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch.) stems. A vase life of at least 20.6 days resulted when harvested stems were placed directly into vases with 22 °C deionized water plus 200 mg·L-1 8-HQS (the standard floral solution used) and 0% to 1% sucrose without floral foam. Maturity of stems at harvest, ranging from 0 to 4 weeks after anthesis, had no effect on vase life or days to first abscised leaf. Pretreatments immediately after harvest using floral solution heated to 38 or 100 °C, or 1 or 10-min dips in isopropyl alcohol, had no effect, whereas 24 hours in 10% sucrose shortened vase life by 6.4 days and time to first abscised cyathium by 4.5 days. Stem storage at 10 °C decreased vase life, particularly when stems were stored dry (with only 0.8 days vase life after 3 weeks dry storage). Increasing duration of wet storage in floral solution from 0 to 3 weeks decreased vase life from 21.5 to 14.6 days. Placing cut stems in a vase containing floral foam decreased time to first abscised leaf by 3.7 to 11.6 days compared with no foam. A 1% to 2% sucrose concentration in the vase solution produced the longest postharvest life for stems placed in foam but had little effect on stems not placed in foam. A 4% sucrose concentration decreased vase life compared with lower sucrose concentrations regardless of the presence of foam. Holding stems in the standard floral solution increased vase life and delayed leaf abscission compared with deionized or tap water only, with further improvement when stem bases were recut every three days. Commercial floral pretreatments and holding solutions had no effect on vase life and days to first abscised cyathium but delayed leaf abscission.

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Mario Valenzuela-Vázquez, Geno A. Picchioni, Leigh W. Murray, and Wayne A. Mackay

d at 21 °C in air and with no preconditioning treatment, desiccation and abscission of flowers at the inflorescence base are observed, by which time the functional vase life has ended ( Davis et al., 1994 ; Mackay et al., 1999 ; Sankhla et al

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Steven A. Altman and Theophanes Solomos

Sim-type carnation flowers (Dianthus caryophyllus L., cv. Elliot's White) continuously treated with 50 mM or 100 mM 3-amino-1,2,4-triazole (amitrole) and held in the dark at 18°C did not exhibit a respiratory climacteric relative to dH2O-treated controls. No morphological changes symptomatic of floral senescence appeared in treated flowers until 12-15 days post-harvest. Other triazoles were not effective in prolonging senescence. Amitrole appears to inhibit ethylene biosynthesis by blocking the enzyme-mediated conversion of S-adenosyl-L-methionine to 1-aminocyclopropane-1-carboxylate. Ethylene action appears to be progressively inhibited in that flowers held in treatment solution for 2 d or less responded to application of 10 uL/L exogenous ethylene whereas flowers held 10 d or longer exhibited no response. Electrophoretic resolution of total crude extracts evidenced protein synthesis as well as degradation. Western analysis and total activity assays showed an amitrole concentration-specific inhibition of catalase activity.