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Erin M.R. Clark, John M. Dole, Alicain S. Carlson, Erin P. Moody, Ingram F. McCall, Frankie L. Fanelli, and William C. Fonteno

, leaf and stem discoloration, drying or general stem decline, depending on the species ( Table 1 ). Vase-life data were collected and analyzed using analysis of variance (SAS 9.1; SAS Institute, Cary, NC). For genera with more than one cultivar, data

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Erin P. Moody, John M. Dole, and Jared Barnes

The cut flower industry faces many challenges due to the difficulty in producing flowers with a long postharvest vase life. To ensure a longer vase life, growers must carefully regulate postharvest conditions and postharvest handling methods. Water

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Ya-Ching Chuang and Yao-Chien Alex Chang

Eustoma grandiflorum is a popular and important cut-flower crop as a result of its long, multiflowered inflorescence, and varying flower colors, sizes, and shapes. The vase life of Eustoma cut flowers can exceed 2 weeks under favorable conditions

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Winston Elibox and Pathmanathan Umaharan

arranged minute flowers subtended by a brightly colored modified leaf, the spathe ( Croat, 1988 ). The size, shape, texture, color, and patterns on the spathe determine the commercial value of the cut flower; whereas its vase life determines its

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Erin M.R. Clark, John M. Dole, and Jennifer Kalinowski

Vase life of cut flowers is dependent on many variables, including the quality of the water in which the flowers are placed ( Conrado et al., 1980 ; Durkin, 1979 ; Halevy and Mayak, 1979 ). Durkin (1979 ) highlighted the importance of water

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Fernando de la Riva, Pilar Carolina Mazuela, Juan Eugenio Álvaro, and Miguel Urrestarazu

use of sucrose as a sugar in holding solutions is a usual practice to extend the vase life of cut flowers ( Macnish et al., 2008 ; Mayak and Dilley, 1976 ). A requirement for carbohydrates was demonstrated in cut flowers of petunia ( Weiss and Haley

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Paul B. Redman and John M. Dole

The postharvest attributes of six specialty cut flower species were studied. First year results indicate that Achillea filipendulina `Coronation Gold' had a vase-life of 10.7 days in deionized water (DI) and can be stored one week at 1.7°C and shipped for one day. Buddeleia davidii (Butterfly Bush) had a vase life of 3.8 days in DI water and tolerated two weeks of cold storage and two days of shipping. Celosia plumosa `Forest Fire' (Plume Celosia) had a vase-life of 5.9 days in DI water and tolerated 2 days of shipping. Cercis canadensis (Redbud) had a vase-life of 9 days in DI water and tolerated one day of shipping. Echinacea purpurea `Bright Star' (Purple Coneflower) had a vase-life of 4.6 days in DI water and tolerated 2 weeks of storage and five days of shipping. Helianthus maximilianii (Maximillian Sunflower) had a vase-life of 6.3 days in DI water and tolerated one week of storage. In addition, silver thiosulfate and 8-hydroxyquinoline citrate increased vase-life of Buddeleia davidii, Celosia plumosa, Echinacea purpurea, and Helianthus maximilianii.

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Lane Greer and A. E. Einert

The frequency of purchase of cut flowers is influenced by the vase life of the stems in the consumer's home. We are attempting to find a preservative solution made of common household products to extend the vase life of cut roses. We conducted a survey of local garden club members to find what recipes they use. We compared several home recipes against three commercial preservatives and tap water. Two treatments were better than plain tap water: 1) a mixture of 1 teaspoon of vinegar, 1 aspirin tablet (325 mg), and 1 tablespoon sugar in 700 ml of water; and 2) a mixture of 1 teaspoon vinegar, 1 tablespoon sugar and 1/2 tablespoon bleach in 700 ml of water. These treatments yielded a vase life of 9 and 8.3 days, respectively, as compared to 2.3 days for water. These treatments also proved clearly better than the three commercial preservatives tested. Changing plain water daily did not appreciably extend vase life over allowing water to remain for the entire life of the following stem. We found no relationship between water uptake and vase life; however, solution pH below 5.0 was necessary for extended vase life.

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Chinthaka Karunaratne, Graham A. Moore, Rodney B. Jones, and Robert F. Ryan

Phosphine (PH3) is a potential alternative fumigant to methyl bromide for insect disinfestation of cut flowers. King protea (Protea cynaroides L.), tulip (Tulipa gesneriana `Apeldoorn'), kangaroo paw (Anigozanthos manglesii Hook.), and geraldton wax (Chamelaucium uncinatum `Purple Pride') were fumigated with PH3 at varying concentrations (100 to 8000 μL·L-1) for 2, 4, or 6 hours. Vase life was evaluated at 20 °C, 65% relative humidity, and constant illumination with a photosynthetically active radiation of 15 μmol·m-2·S-1. No significant change in vase life was observed for kangaroo paws after any of the PH3 fumigations. A 6-hour fumigation at 8000 μL·L-1 significantly reduced vase life in king protea, tulip, and geraldton wax flower. Geraldton wax flower and tulip were relatively sensitive to PH3, as they were damaged by 4000 μL·L-1 for 6 hours and 8000 μL·L-1 for 4 hours, respectively. Phosphine has potential as an insect disinfestation fumigant for king protea, tulip, and kangaroo paw at 4000 (μL·L-1 for 6 hours without affecting vase life or causing damage.

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Kuang-Liang Huang and Wen-Shaw Chen

An experiment was conducted to measure the effects of pulse treatments of BA, sucrose, and BA before, after, or with sucrose, on the vase life of cut Eustoma flowers. A BA pulse at 50 mg·L-1 before 4% sucrose promoted the longevity of cut Eustoma flowers better than other treatments. Simultaneously, sucrose, glucose, and mannose concentrations in flowers during vase periods were maintained at higher levels in double pulse treatments than in the single pulses. Ethylene production in flowers 2 days after vase treatment was highest in the BA-treated flowers; intermediate in flowers pulsed with BA before, after, or with sucrose; and lowest in sucrose-treated flowers. Although a BA pulse increased ethylene production over that of controls, it inhibited senescence in cut Eustoma flowers. Respiration in flowers pulse-treated with sucrose or with BA before, after, or with sucrose, was significantly higher than that in controls. Results suggest that the vase life of cut Eustoma flowers is improved by either BA or sucrose in vase solution and especially when BA was pulsed before the sucrose pulse. Chemical name used: N6-benzyladenine (BA).