Aleksandra Łukaszewska's research while affiliated with Warsaw University of Life Sciences - SGGW and other places
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Publications (24)
Lisianthus is among the most popular cut flowers. Regarding the postharvest losses, these experiments were designed to compare the effects of a nanosilver (NS) based preservative to the standard preservative containing 8-hydroxyquinoline citrate (8-HQC) and sucrose (S). Additionally, the effect of 24 h conditioning in the NS solution on the posthar...
Recently peonies have become very popular cut flowers. As peony flowering period is short, long term cold storage could assure its prolonged supply and make long distance transport feasible. The effect of dry cold storage, of 8-hydroxyquinoline and nanosilver preservatives on the peony keeping qualities were tested on the most popular cultivar ‘Sar...
Peony is one of the most important ornamental plants in the international flower market, but has a relatively short vase life in water. This study tested the effects of 8-hydroxyquinoline citrate (8-HQC) and nanosilver (NS) in combination with sucrose, as well as two commercial preservatives, on the longevity and some physiological and biochemical...
To prolong their vase life, cut flowers are commonly kept in holding solutions. These must include a biocide to retard bacterial growth. In this study, the effect of nanosilver (NS) on certain aspects of senescence in cut garden cosmos (Cosmos bipinnatus) flowers was compared to that of the commonly used 8-hydroxyquinoline citrate (8-HQC). In combi...
Common lilac (Syringa vulgaris L.) is a popular ornamental shrub which under natural conditions of the temperate zone blooms for ca three weeks in May. Forcing procedures may extend the flowering period to 6 months in autumn and winter. Temperatures required to begin the forcing cycle range from 37 °C in November to 16 °C in March. Forcing lilac at...
In common lilac, natural flower bud formation starts in July and proceeds until the end of October, when deep dormancy begins, allowing buds to overwinter. In spring after winter chilling, generative lilac buds resume growth and bloom in May. With the use of forcing procedures, blooming of common lilac is possible in autumn and winter when buds are...
Bedding plants are often subjected to soil water deficit ? either after planting and/or during the market chain. Methods to alleviate the negative water stress effects are sought for to preserve ornamental values of plants. The aim of this study was to evaluate the response of two bedding plants, Ageratum houstonianum Mill. and Salvia splendens Sel...
Clematis is visually a very attractive plant which can be used for cut flowers, provided that proper cultivars are chosen. In this study, the phenomenon of programmed cell death (PCD) was compared in petals of clematis blooming on mother plants in the open field and in cut flowers, in two cultivars with different flower longevity. The dynamics of P...
Short vase life of cut lilac stems limits its commercial potential. Rapid wilting of cut lilac inflorescences is probably caused by blockage of water transport in stems. The purpose of this study was to recognize the nature of the occlusions blocking xylem vessels in cut stems of common lilac and to identify a relationship, if any, between the type...
Recently, the programmed cell death (PCD) is studied in the context of the postharvest longevity of cut flowers with the goal of slowing down the processes that ultimately lead to flower death, and to ensure a long display life of cut plant material. In this study, the phenomenon of PCD in petals of common lilac (Syringa vulgaris L.) was observed,...
Alstroemeria is one of the most popular cut flowers in Europe, due to its postharvest longevity and a wide colour palette. However, premature leaf yellowing reduces the ornamental value of the flowering stems even before opening of the secondary florets in cymes. The aim of this study was to evaluate the use of sucrose, gibberellin and 8-hydroxychi...
Postharvest performance of forced cut lilacs ‘Mme Florent Stepman’ as affected by harvest date and preservatives. Due to the forcing methods the cut stems of lilacs are available on the market between November and April, outside their natural blooming period in May. Their vase life is often unsatisfactory as the racemes wilt after 4–5 days. The tri...
Under natural conditions, Syringa vulgaris blooms in May but it may be forced to produce blooming panicles in autumn, winter and early spring. To break winter dormancy,
plants require high temperatures, the range of which depends on the forcing date. Forcing in November requires exposure to
temperatures of ∼37°C. Such an exposure may affect the dev...
references Bukovač M. J. (1972). Foliar penetration of plant growth substances with special reference to fruit trees. Acta Horticulturae, 34: 69-77. Caesar J. C. (1990). Effect of simulated shade-light quality on stem anatomy of Pinus contorta seedlings. IAWA-Bulletin, 11 (2): 120.. Etiolation as a tool for rooting cuttings of difficult-to-root woo...
In order to improve vegetative propagation of Berberis thunbergii ‘Red Rocket’, stock plants were subjected to shading and IBA treatment, as well as to the application of two commercially
available rooting powders. Spraying stock plants with IBA 24 hours prior to cutting harvest gave the effect comparable to
the use of rooting powders. Reduction of...
In order to improve vegetative propagation of a difficult to root Cotinus coggygria the stock plants were subjected to: etiolation, shading and spraying with IBA, combined with the application of two commercially
available rooting powders. The IBA treatment was more suitable for rooting of C. coggygria cuttings than the NAA application and it enhan...
Experiments conducted at commercial nurseries near Warsaw, Poland compared the effectiveness of foliar auxin application relative to the traditional use of rooting powders inducing rhizogenesis in the cuttings of several species of ornamental shrubs. Stock plants were sprayed with NAA or IBA in concentrations of 50-1000 mg dm-3, 24 hour prior to cu...
The effects of a 24 hrs pulse conditioning with GA3 or BA on the lipoxygenase activity and the expression of the lipoxygenase gene were studied in senescing cut leaves of Zantedeschia aethiopica Spr. and Hosta ‘Undulata Erromena’, respectively. The GA3 treatment in Zantedeschia and the BA treatment in Hosta prevented increases the activity of lipox...
Accumulation of ammonium and proline were reported as phenomena associated with plant response to stress and/or senescence.
The effects of a preservative (8HQC + sucrose) and 24 hrs pulse conditioning with GA3 on the ammonium and proline contents were studied in senescing cut leaves of Zantedeschia aethiopica Spr. and Z. elliottiana Engl., grown fo...
Treatments with BA or GA3 are known to extend the foliage display life of Hosta ‘Undulata Erromena’ and Zantedeschia aethiopica Spr., respectively. The effects of a 24hrs pulse conditioning with BA or GA3 on the protein content, proteolytic activity and the expression of the cysteine protease gene were studied in senescing cut
leaves of both specie...
Treating cut leaves of Zantedeschia aethiopica with aqueous solutions of gibberellic acid (GA3) considerably extended their display life, whether applied as a 24 h pulse treatment, or as a brief postharvest dip. In contrast, a standard preservative solution used to prolong the longevity of cut flowers (8-HQC+sucrose) was deleterious to Zantedeschia...
Effect of drought and benzyladenine on scarlet salvia (Salvia splendens Sello) and gera-nium (Pelargonium hortorum L. H. Bail.). Bedding plants are an important part of the urban public space and private gardens. However, they often suffer from drought stress, especially when grown in containers. In this trial a response to water stress was compare...
Reaction of bedding ornamentals to drought stress. Bedding plants are an important part of the urban public space and private gardens. However, they are not always properly watered and suffer from drought stress, especially when grown in containers. In this trial a response to water stress of eight commonly used species were compared: cockscomb Cel...
Citations
... Furthermore, a study by Skutnik et al. found that NS treatment with the addition of sucrose is more effective in extending the vase life of lisianthus in comparison to the application of the ethylene inhibitor 8-HQC. NS treatment not only increased stem uptake strength and transpiration rate but also significantly reduced the activity of hydrogen POD in both the upper and lower stem sections of the flowers, enhancing the overall condition of cut flowers [91]. Consequently, it is evident that NS treatment effectively mitigates bacterial-induced blockages in the xylem, enhances water uptake in cut flowers, and maintains their relative fresh weight, with superior results when compared to some common ethylene inhibitors. ...
... Nitrate accumulation after preservation could be explained by the lower metabolic activity occurring during long cold storage. Cold storage limits transpiration, flower opening, and consumption of storage compounds (i.e., starch) Skutnik et al., 2020), causing a slowdown in metabolism and the key enzymes involved in this process (i.e., nitrate reductase) (Ferrante and Reid, 2006). All treatments showed an increase in nitrate concentration after 15 days of cold storage. ...
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... To address the above issues, the main components of the cut flower preservative solution include water, sugars, fungicides, and PGRs. Among them, sugars and fungicides act as energy sources and inhibitors of bacterial growth, respectively [35,36]. In this experiment, a vase solution composed of 30 g L −1 sucrose and 0.2 g L −1 β-hydroxyquinoline (CK2) was used. ...
... C. sulphureus Cav., a member of the Asteraceae family, is grown as an ornamental plant, renowned for its vibrant and profuse yellow, orange or red flowers. While it thrives in gardens, landscaping and flower beds, enhancing the realm of ornamental plants, its potential in the cut flower market is constrained by its limited lifespan (Skutnik et al. 2020). This plant like other members of the Asteraceae family is known for its unique inflorescence called the "capitulum" which consists of multiple small flowers arranged in a composite head. ...
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... Cut flower cultivation stands as a prominent sector within ornamental horticulture. The quality and longevity of cut flowers are influenced by an array of factors occurring before and after harvest (Fanourakis et al., 2013;Jêdrzejuk et al., 2018). Gladiolus grandiflorus is recognized as a specialized cut flower of significant commercial value, holding a position among the top five in the international market for cutflowers (Darras, 2021). ...
... Plants exposed to high temperatures usually respond by causing changes such as increasing reactive oxygen species (Jedrzejuk et al., 2016), destabilizing membranes and increasing their fluidity (Nazdar et al., 2019;Amaral et al., 2020), and damaging the cell membrane and chloroplast structures (Guo et al., 2017). ...
... In comparison to water, the treatment with 8-hydroxyquinoline citrate (8-HQC), a standard flower preservative, delayed senescence of the cut flowers of both cultivars, but organelles and DNA degradation was retarded only in the petals of short-lived cultivar. This suggested that, at least partially, the different response of cut flowers to preservatives might depend on the effect of the compounds on PCD (Rabiza-Świder et al., 2016). ...
... The influence of PGPR on rooting cutting is already widely recognized and studied [57,58,60,[75][76][77][78][79]. The function of bacteria to release inorganic nutrients from organic reserves at a sufficient rate to sustain rapid plant growth is an important mechanism [80]. ...
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... The degradation of the pit membrane (cellulose) is essential for tyloses formation [34]. Tyloses are usually composed of lignins and polycarbohydrates [78]. Formation of tyloses may protect plant vascular system from microorganisms as tyloses contain anti-bacterial compounds like coumarins, procatechuic acid, catechol, and flavonoids that prevent microbes from spreading. ...
... They inhibit microbial growth, lower the pH of the solution, and chelate some metal ions, which prevents the formation of physiological blockages and causes closure of the stomata [71,126]. For geophytes, the efficacy of a medium containing sugar and hydroxyquinoline esters was demonstrated in Hippeastrum × chmielii [133], H. × hybridum [134], H. vittatum [135], Alstroemeria aurantiaca [48] and Z. albomaculata 'Albomaculata' [43], among others. Sometimes, PGRs are used to extend the vase life of cut geophyte flowers. ...
