Postharvest water quality affects vase life of cut Dendranthema, Dianthus, Helianthus, and Zinnia

Carlson, Alicain S.; Dole, John M.

doi:10.1016/j.scienta.2013.09.024

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…During vase period, pH of the solutions containing bacterial strains became much more acidic with the greatest decrease (2.6 units) for PF-279 at 5 mL L -1 , which might be the reason for continued water uptake by the stems (Table 2). Higher water uptake due to low pH has also been reported in other studies with different ornamental species (Ahmad et al, 2013b;Carlson and Dole, 2013). However, the solution EC Table 3.…”

Section: Resultssupporting

confidence: 70%

BIO-CONTROL ACTIVITY OF BACTERIAL STRAINS ON POSTHARVEST PERFORMANCE OF Gladiolus L. HYBRIDS ‘MAMMOTH’

Ahmad¹,

Saleem²,

Dole³

et al. 2016

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A study was carried out to elucidate the efficacy of different bacterial strains on controlling detrimental bacteria and on vase life extension of Gladiolus L. hybrids 'Mammoth'. In a preliminary study, three bacterial strains (Bacillus pumilus, Delftia acidovorans, and Herbasperillum sp.) were isolated from the vase solutions of cut Gladiolus, identified and cultured to obtain the bacteria to be used in the study. These isolated strains were compared with two strains of Pseudomonas fluorescens (PF-279 and PF-417). All tested strains produced similar vase life of cut gladiolus stems, which was also similar to that of stems placed in tap water. However, stems placed in solutions with PF-279 Pseudomonas fluorecsens resulted in highest water uptake, while the stems placed in solutions with higher concentrations of Herbasperillum sp. (10 or 20 mL L-1) had lowest water uptake. Cut stems require low pH for sustaining water uptake and vase life extension, but use of nutrient broth to culture bacteria increased initial solution pH, which resulted in early senescence of cut stems due to rapid bacterial growth, vascular occlusion due to embolisms and reduced stem hydraulic conductance compared to the stems placed in tap water (control). In summary, tested bacterial strains had no effect on controlling detrimental bacteria present in the vase solutions or vase life extension of cut gladiolus and cannot be used in organic floral preservatives for holding cut stems after harvest.

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Section: Resultssupporting

confidence: 70%

BIO-CONTROL ACTIVITY OF BACTERIAL STRAINS ON POSTHARVEST PERFORMANCE OF Gladiolus L. HYBRIDS ‘MAMMOTH’

Ahmad¹,

Saleem²,

Dole³

et al. 2016

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“…The carbohydrates and biocide in the holding solution were able to overcome the effects of high EC to a degree, extend vase life, and delay bent neck. Carlson and Dole (2013) and Neumaier et al (1999) also found that floral preservative use negated the deleterious effects of a high EC. Preservatives help to extend vase life by providing the stems with a carbohydrate source, lowering the pH, and preventing bacteria and microbes from causing vascular blockage in stems (Halevy and Mayak, 1979).…”

Section: Discussionmentioning

confidence: 92%

“…Sensitivity to water EC varies by species. Carnation (Dianthus caryophullus) and chrysanthemum (Chrysanthemum Âgrandiflorum) are reported to prefer a higher water EC level whereas the optimum level is lower for zinnia (Zinnia violacea) (Carlson and Dole, 2013 , 2011b).…”

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confidence: 99%

Determining Optimal Electrical Conductivity Levels and Elements for Extended Vase Life of Cut Roses

Clark

Dole

Kalinowski

2021

hortte

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Six experiments were conducted using three cultivars to investigate the impact of water electrical conductivity (EC) and the addition of nutrients to vase solutions on postharvest quality of cut rose (Rosa hybrids) stems. Postharvest quality of cut ‘Freedom’ rose stems was evaluated using solutions containing either distilled water with sodium chloride (DW+NaCl) or DW+NaCl with the addition of a commercial floral preservative (holding solution containing carbohydrates and biocide) to generate a range of EC values (Expts. 1 and 2). The third experiment compared the effect of different EC levels from the salts NaCl, sodium sulfate (Na2SO4), and calcium chloride (CaCl2). The fourth experiment investigated EC’s impact on rose stems with the addition of two rose cultivars (Charlotte and Classy). When ‘Freedom’ stems were subjected to DW+NaCl, the longest vase life was achieved with 0.5 dS·m–1. The addition of holding solution not only extended vase life but also counteracted the negative effects of high EC with maximum vase life occurring at 1.0 dS·m–1. Furthermore, stems in the holding solution experienced significantly less bent neck and the flowers opened more fully than those in DW. Stems placed in DW with a holding solution also experienced more petal bluing, pigment loss, necrotic edges, and wilting than those held in DW alone. This effect was likely due to increased vase life. Salt solutions containing Na2SO4 and CaCl2 resulted in extended vase life at 1.0 dS·m–1, but increasing salt levels decreased overall vase life. As EC increased, regardless of salt type, water uptake also increased up to a maximum at 0.5 or 1.0 dS·m–1 and then continually declined. Maximum vase life was observed at 1.5 dS·m–1 for cut ‘Charlotte’ stems, and at 1.0 dS·m–1 for ‘Classy’ with the addition of a holding solution. Physiological effects were different based on cultivar, as observed with Charlotte and Freedom flowers that opened further and had less petal browning than Classy flowers. ‘Freedom’ had the greatest pigment loss, but this effect decreased with increasing EC. Further correlational analysis showed that in water-only solutions, initial and final EC accounted for 44% and 41% of the variation in vase life data, respectively, whereas initial pH accounted for 24% of variation. However, the presence of carbohydrates and biocides from the holding solution was found to have a greater effect on overall vase life compared with water pH or EC. Finally, in Expts. 5 and 6, cut ‘Freedom’ stems were subjected to DW solutions containing 0.1, 1, 10, or 100 mg·L–1 boron, copper, iron, potassium, magnesium, manganese, or zinc. None of these solutions increased vase life. Conversely, 10 or 100 mg·L–1 boron and 100 mg·L–1 copper solutions reduced vase life. Finally, the addition of NaCl to a maximum of 0.83 dS·m–1 increased the vase life in all solutions. These analyses highlight the importance of water quality and its elemental constituents on the vase life of cut rose stems and that the use of a holding solution can overcome the negative effects of high EC water.

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“…The pH (2.78) of the pulsing solution of 600 ppm 8-HQS plus 5% sucrose solution used in this study may have played a role in lowering microbial growth on the third day in the vase. Low pH (3.0-4.0) improved the vase life of some cut flowers including Rosa L and Dendranthema L. (Carlson and Dole, 2013;Abd-Allah et al, 2019). Lowered solution pH also improved the vase life of Rosa hybrida cv.…”

Section: Days Of Storagementioning

confidence: 99%

Influence of pulsing and wet cold storage on the vase water microbial profiles and overall quality of cut gladioli

et al. 2021

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Occlusion of the stem vasculature by microorganisms that proliferate in the vase water, or the plant vessels, leads to water stress symptoms that reduce postharvest quality of cut flowers. This study aimed to determine the effects of pulsing and wet-cold storage on the microbial profiles in cut Gladiolus grandiflorus L. cv. Fado. Pulsing treatments of 600-ppm 8-hydroxyquinoline sulfate plus 5% sucrose solution versus distilled water were administered before wet cold storage periods of 0-5 days in cut Gladiolus, previously grown from corms under open field. A two-by-six factorial experiment embedded in a completely randomized design with four replicates was accomplished. Proc GLM in two-way Anova was adopted, and the means were separated using Tukey’s test at a 5% level of significance. The pulsing treatment of 600 ppm 8-HQS plus 5% sucrose, the wet cold storage duration and their interactive effects significantly (P˂0.0209; ˂0.0001 and ˂0.0001 respectively) affected the means of the colony-forming units in the vase water of cut Gladiolus at senescence. The prolonged vase life of cut gladioli spikes was associated with decreased microbial proliferation as influenced by pulsing and wet storage duration of up to 4 days. Data generated from this study will improve existing technologies related to the quality and market value of this Gladiolus cultivar.

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Postharvest water quality affects vase life of cut Dendranthema, Dianthus, Helianthus, and Zinnia

Cited by 6 publications

References 17 publications

BIO-CONTROL ACTIVITY OF BACTERIAL STRAINS ON POSTHARVEST PERFORMANCE OF Gladiolus L. HYBRIDS ‘MAMMOTH’

BIO-CONTROL ACTIVITY OF BACTERIAL STRAINS ON POSTHARVEST PERFORMANCE OF Gladiolus L. HYBRIDS ‘MAMMOTH’

Determining Optimal Electrical Conductivity Levels and Elements for Extended Vase Life of Cut Roses

Influence of pulsing and wet cold storage on the vase water microbial profiles and overall quality of cut gladioli

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