The vase life of waxflower (Chamelaucium Desf.) is affected by the weight ratio of flowers to stem

The effect of flower weight on changes in the vase life of flowers and leaves of waxflowers was studied by evaluating the arranged flower weight of cultivars derived from the Chamelaucium uncinatum, Chamelaucium megalopetalum and Verticordia species. Competition for water and carbohydrates between flowers and leaves influenced vase life. The removal of flowers had at least four times the effect on leaf vase life as the removal of leaves on flower vase life. Supplying exogenous sucrose to satisfy the demand for carbohydrates negated this effect, indicating that flowers depend on carbohydrates being supplied from leaves to maintain vase life. Cultivars with a greater proportion of flowers (on a weight basis) improved the vase life of flowers at the expense of the leaves. Cultivars with large flowers or many small flowers or a greater weight ratio of flowers to stem appeared to draw more carbohydrates and water from the leaves, giving them a longer vase life and decreasing the vase life of the leaves. The vase life of flowers increased with the stage of opening of flowers up to 50% opening and then decreased up to 100% opening

Factors Controlling Vase Life of Waxflowers (Chamelaucium Desf. Varieties and Hybrids)

Factors affecting vase life of Chamelaucium Desf. hybrids and hybrids between Chamelaucium and Verticordia Desf. were studied. Both genotype and cultivar determined the length of vase life of waxflowers. The use of sucrose or other sugar types and concentrations supplemented with 8-hydroxyquniline sulphate and/or silver thiosulphate extended the vase life of waxflowers cultivars depending on genotype. Flowers strongly competed with leaves for carbohydrates and water, affecting the vase life of waxflowers cultivars

Factors affecting variation in the vase life response of waxflower cultivars (Myrtaceae: Chamelaucium Desf. and Verticordia spp. Desf.) tested under various vase solutions

The effects of genotype and vase solutions on the vase lives of waxflower cultivars were studied. The vase life of 16 cultivars derived from different genetic backgrounds showed a variation. The vase life of Chamelaucium uncinatum cultivars held in deionised water was generally the shortest, with four cultivars averaging 9.5 and 8.9 days for flowers and leaves while the vase lives of C. uncinatum × megalopetalum hybrids were on average 16.0 and 25.0 days for flowers and leaves, respectively. The hybrid 'Southern Stars' with C. uncinatum × Verticordia plumosa as parents had the longest flower vase life of 24.9 days, although another Verticordia × Chamelaucium had a 95-day flower vase life and other hybrids of the cultivars of C. uncinatum and Verticordia grandis Desf. ('WX73'), C. sp. Gingin Marchantii ('WX97') and C foriferum ('Lady Stephanie') as a parent had intermediate to short vase lives of 11.4 to 15.5 days. The cultivars responded most to 8-hydroxyquniline sulphate (HQS) + sucrose or HQS + sucrose + silver thiosulphate (STS), being 1.5- to 1.6-folds higher than in deionized water. The cultivars showed a varied response to a vase solution of sucrose + HQS + STS, with which C. uncinatum vase life increased 1.9-fold compared to 1.7-fold for C. megalopetalum. Waxflower s were found to be susceptible to water stress, causing flower s to close and shortening vase life. On average for the 80 cultivar-vase solution combinations tested, flower vase life ended when the stems reached 75.5 ± 5% fresh weigh. Longer vase life cultivars had a greater ability of maintaining a water balance at or above 75% for longer

Review on Effect of Essential Oil on Vase Life of Cut Flowers

Longer vase life of cut flowers is preferred in flower cultivation and marketing as good quality trait for retailers and consumers. Longevity of flower shelf life has been influenced by various biotic and a biotic factors. It can be improved using different preservatives substances. Natural essential oils widely evaluated among which Thyme, Rosemary, Geranium, Mint, Eucalyptus, Ajowan, Savory, Coriander, Dill and Artemisia include some of the aromatic plants used for production of the extracts. For instance, Thyme essential oil was tested and positive responses were reported in case of Lisianthus, Gerbera, Narcissus, chrysanthemum, Alstroemeria, and carnation cut flowers vase life longevity. It was reported as vase life of Carnation cut flower improved by essential oil obtained from Artemisia, Rosemary, Coriander, and Dill. Rosemary and Pepper mint essential oils suggested as they can be used in prolonging Alstroemeria cut flowers vase life. Most studies reported usefulness of essential oils for floriculture as noble alternative substitute to other silver and chemical compounds because of their antimicrobial activities and environmental friendly nature of the extracts. Different scientific findings on application of essential oil on vase life of cut flowers reviewed in this paper. Keywords: Vase life, cut flower, essential oil, microbe

Curcuma alismatifolia vase life

Cut curcuma stem has a reported vase life of 7 to 21 days and this difference in vase life is probably due to a combination of different factors such as growing conditions and postharvest treatments. However, the cut flower industry needs key postharvest information for new species and cultivars to be able to effectively market the flowers. The objectives of this study was to evaluate the effect of commercial hydrator and holding solutions, commercial growth regulator formulation, floral foam, ethylene and silver thiosulfate (STS) on the postharvest handling of C. alismatifolia cultivars. Control treatment (deionized water) had better vase life than the combinations of the commercial hydrator for 4h and commercial holding solution for 44h. Floral foam reduced vase life to 17 days from 23 days for the control treatment. The growth regulators gibberellin plus benzyladenine (GA4+7 + BA) had a positive effect on the fresh weight keeping parameter, but further studies are necessary. STS did not improve vase life, nor did ethylene at 1 µL L-1 reduce it. The curcuma cultivars tested were not positively affected by vase solution composition and had an average vase life in deionized water of 21 days

Water Control in Cut Stems of Rose and Carnation

This PhD Thesis address, on cut flowers vase life, physiological mechanisms aimed at maintaining and regulating tissues hydration, cellular turgor, water use and senescence phenomena. Specifically we considered the effect of compatible solutes (osmoregulation) on water status, hydration state and vase life of cut stems of rose and carnation (chapter 1). In the second chapter we evaluated the application of anti-transpirant compounds that may act indirectly or directly on rose cut stems transpiration, in order to control the water use and longevity during the vase life. Finally (Chapter 3) we assessed how anti ethylene compounds may delay senescence phenomena of carnation cut stems, with the purpose to evaluate this effect in terms of on water balance, hydration and longevity during the vase life

Effects of different concentrations of sucrose and citric acid on vase life of rose

Vase life is the most important parameter to determine the quality of cut flower, however, due to highly perishable nature is always challenging to vase life. An experiment was conducted at Horticulture Lab, Prithu Technical College, Dangon 2018 in order to find out best concentration of sucrose and citric solution that enhances and prolongs the better flower quality and longevity. Experiment was laid out in completely randomize design (CRD) with nine treatments and three replication. Rose sticks were harvested at flower bud stage and two sticks were kept in each vase solution. 2% sucrose with 15 ppm citric acid solution found longest vase life and this combination has the potential to be used as a commercial cut flower preservative solution to delay flower senescence, enhance post-harvest quality and prolong the vase life of cut rose flowers

Effect of methyl jasmonate and sucrose on endogenous non-structural carbohydrates in petals and leaves of cut ‘First Red’ roses (Rosa hybrida L.)

Effects of exogenously applied methyl jasmonate (MeJA) and sucrose on vase life and non-structural carbohydrate concentration in petals and leaves of cut ‘First Red’ roses were investigated. Roses were placed in sealed plastic containers and received MeJA vapour treatment (0.1 μL MeJA L-1) for 24 h at 20°C. Flowers were then placed in individual bottles containing 0 or 2% (v/v) sucrose solution. Flower petals and the two uppermost five-leaflet leaves were detached on days 0, d 5 and d 10 of vase life. Samples were individually snap-frozen in liquid nitrogen and freeze-dried. Non-structural carbohydrates were extracted and quantified using standard HPLC coupled to evaporative light scattering detection. The MeJA vapour treatment enhanced vase life of flower and foliage of ‘First Red’ roses. Significant differences were observed between foliage life of cut ‘First Red’ roses that were treated with MeJA and sucrose, but not for flower life. Rose stems treated with MeJA in the absence of sucrose had an extended vase life compared to roses treated with 2% sucrose alone (14.0 vs. 12.8 days of vase life). Sucrose and myo-inositol, and to a lesser extent glucose concentrations in petals of cut roses decreased during vase life, even when flowers were supplied with 2% sucrose. Concomitant to this, fructose levels in petals increased during vase life. Neither sucrose nor MeJA had a significant effect on any of the sugars measured in petals of cut roses. In contrast, significant differences were apparent for all sugars measured in leaves that were treated with MeJA and sucrose solutions. The combination of MeJA and 2% sucrose solution sharply increased endogenous sucrose concentration in leaves, but the opposite was shown in the absence of 2% sucrose. Sucrose treatment alone did not consistently alter endogenous sucrose concentration. Interactions between MeJA and sucrose on sugar metabolism are discussed

Effects of Chitosan in Extending the Vase Life of Cut Chrysanthemum (Dendranthema Morifolium Ramat) Flowers

The effect of the isolated bacteria strains on the vase life of cut flowers of Chrysanthemum (Dendranthema morifolium Ramat) was investigated. The bacteria strains were isolated from the cut stem end and vase water of cut chrysanthemum flowers. The longevity of vase life and total water uptake of cut s I chrysanthemum was reduced by placing the stems in a suspension of Pantoea' agglomerans and Burkholderia rnultivorans at 10' CFU m ~ " . The study was also conducted to look at the effects of chitosan in extending the vase life of cut chrysanthemum. Chitosan was applied as pulse treatment. Cut flowers were treated with 1) chitosan at 0, 25, 50, 75 and 100 mg L-', 2) chitosan at concentration 1) iubplemented with 2% sucrose, 3) chitosan at concentration 1) supplemented with 1.5 mM Ca(NO& and 4) chitosan at concentration 1) supplemented with 1.5 mM Ca(NO& and 2% sucrose. The experiment was carried out in the Postharvest Laboratory with the environmental conditions, 25 * 2OC, 70% RH and 15 ymol m-2 s-' light intensity from cool-white fluorescent lamps for 12 hours. Compared to those held in control, all treatments extended the vase life. Treatment 75 mg L-' chitosan supplemented with 1.5 mM Ca(NO& was the most effective in extending the vase life