EFFECTS OF FLOWER CARE FLORAL PRESERVATIVE ON THE VASE-LIFE AND BLOOM SIZE OF ROSA HYBRIDA CV. FOREVER YOURS ROSES

1975 ◽  
Vol 55 (3) ◽  
pp. 775-781 ◽  
Author(s):  
E. V. PARUPS

Effects of the cut flower preservative Flower Care varied significantly during the different simulated stages of the production–marketing–consumer cycle. The vase-life of the cut rose Rosa hybrida L. cv. Forever Yours was extended the longest when the preservative was used during the consumer period. When used during the simulated wholesale and retail marketing periods this extension in vase-life was less. The effects of the preservative were least when it was used during the immediate postharvest period. The final size of the flower increased significantly when the preservative was used during the simulated wholesale and consumer periods. The experimental data were used in a regression equation for calculation of vaselife at any concentration of preservative used under the given environmental conditions.

2021 ◽  
Vol 289 ◽  
pp. 110444
Author(s):  
Morteza Soleimani Aghdam ◽  
Amin Ebrahimi ◽  
Morteza Sheikh-Assadi ◽  
Roohangiz Naderi
Keyword(s):  

HortScience ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 509-512 ◽  
Author(s):  
Peitao Lü ◽  
Xinmin Huang ◽  
Hongmei Li ◽  
Jiping Liu ◽  
Shenggen He ◽  
...  

In studying the postharvest water relations of cut flowers, researchers aim to determine rates of water uptake and water loss along with changes in fresh weight. An automatic apparatus was devised for continuous monitoring of these indices. The novel apparatus consists of two balances automatically recording mass at a relatively high data acquisition rate (min−1), a personal computer, two containers, and plastic tubing. The apparatus is accurate, labor-saving, and real-time. It enabled dynamic synchronous recording of water uptake as well as fresh weight of the cut flower stem, from which precise water uptake loss rates during vase life can be accurately determined. Rates of water uptake and water loss of individual cut rose (Rosa hybrida cv. Movie Star) stems were measured using the apparatus under alternating 12-h light and dark periods. Both water uptake and water loss rates fluctuated with the light to dark shift over 120 h of observation. Stem fresh weight increased rapidly over the first 40 h of vase period and decreased gradually thereafter. Cut lily (Lilium hybrida cv. Yellow Overlord) stems showed similar trends in water uptake and water loss rate to cut rose stems. The accuracy and sensitivity of the new apparatus was validated by comparison with manual weighing using a balance at 2-h intervals under alternating 12-h light and dark periods over 108 h. The apparatus described here constitutes a suitable method for direct measurement of water uptake and fresh weight, including capturing relatively rapid water balance responses to changes in the postharvest environment.


2015 ◽  
Vol 5 (1) ◽  
pp. 10-15 ◽  
Author(s):  
P. Khan ◽  
S. Shahrin ◽  
T. Taufique ◽  
H. Mehraj ◽  
A. F. M. Jamal Uddin

2020 ◽  
Vol 28 (1) ◽  
pp. 29-38
Author(s):  
Hailay Gebremedhin

AbstractCut rose stems were pretreated for 24 h with various compounds before being stored in Chrysal solution. Two experiments were conducted to study the effects of different concentrations of aluminum sulphate, ethanol and sucrose in preservative solutions and their combination on flower longevity and post-harvest physiological properties of rose (Rosa hybrida L.) cut flowers cultivars ‘Red Sky’ and ‘Blizzard’. The first experiment aimed to determine the optimum concentration of aluminum sulphate used as a biocide (0, 0.5, 1, 1.5 g·dm−3), ethanol used as a biocide and anti-ethylene factor (0, 4, 8, 12%) and sucrose used as a source of energy (0, 10, 20, 30 g·dm−3). In the second experiment, the most effective concentrations were cumulated in combinations of pretreatment solutions. Single use of chemicals: 0.5 g·dm−3 aluminum sulphate, 4% ethanol and 20 g·dm−3 sucrose extended the longevity of both cultivars by 17, 18 and 19%, respectively as compared to deionized water. In the second experiment, the preservative solution containing all three chemicals at optimal concentrations extended cut flower longevity by 30% compared to deionized water. ‘Blizzard’ has lost its commercial value by 6.6% of the time earlier than ‘Red Sky’. Generally, using a biocide, anti-ethylene and source of energy in a pretreatment solution can maintain the high quality of the cut rose flowers and their vase life.


2016 ◽  
Vol 91 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Liang Yu Wu ◽  
Hui Xiao ◽  
Wen Jing Zhao ◽  
Ping Sun ◽  
Jin Ke Lin

2020 ◽  
Vol 38 (3) ◽  
pp. 80-90
Author(s):  
Ben A. Bergmann ◽  
John M. Dole

Abstract Separate experiments showed that current cut rose (Rosa × hybrida) cultivars vary considerably in Botrytis (Botrytis cinerea) susceptibility and ethylene (ET) sensitivity. There was no pattern when considering these two traits together for the 26 cultivars used, and neither trait appeared predictive of the other. Four cultivars were identified that included one each that is Botrytis susceptible/ET sensitive, Botrytis non-susceptible/ET sensitive, Botrytis susceptible/ET insensitive, and Botrytis non-susceptible/ET insensitive. Exposing these cultivars to ET often resulted in reduced vase life and more pronounced negative Botrytis responses (flower Botrytis damage, leaf Botrytis incidence, and frequency of termination due to Botrytis). This was true for ET sensitive and insensitive cultivars, Botrytis susceptible and non-susceptible cultivars, Botrytis inoculated and non-inoculated stems, and stems exposed to ET either before or after Botrytis inoculation and incubation. Thus, even if ET is not thought to have a major influence on a given cut rose cultivar in terms of classic negative ET responses (leaf drop, petal wilt, altered opening rate), ET exposure could have a significant negative impact on that cultivar by exacerbating Botrytis damage. Shipping temperatures and methods can have a strong influence on Botrytis damage, with pre-cooling of shipping boxes before cold storage/transport being beneficial. Index words: Botrytis blight, Botrytis cinerea, cut flowers, floriculture, gray mold, Rosa L. hybrids. Species used in this study: Rose (Rosa × hybrida) focal cultivars ‘Cuenca', ‘Daphnee', ‘Freedom', ‘Vendela'; Botrytis (Botrytis cinerea Pers. ex. Fr.). Chemicals used in this study: 1-methylcyclopropene (EthylBloc); ethylene; silver thiosulfate.


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