Mechanical damage on Bird-of-Paradise (Strelitzia reginae) postharvest

Dias, Glaúcia Moraes; Queiroz, Sara J.; Sanches, Juliana; Tombolato, Antônio Fernando Caetano

doi:10.14295/rbho.v19i2.653

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Bird of Paradise (Strelitzia reginae Banks) presents great market potential due to its rusticity, stem length and beauty (Dias et al, 2013). One major setback of the flower market are the high postharvest losses (Dias-Tagliacozzo & Castro, 2002), caused by the flower decay that can be intensified low shipping and storage conditions and often conducted without the aid of refrigeration and simple postharvest treatments (Dias et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Methyl jasmonate and salicylic acid on postharvest physiology of Bird of Paradise

Pereira

Gomes

Vieira

et al. 2017

Agraria

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Bird of Paradise (Strelitzia reginae Banks) has great market potential due to its intrinsic beauty and longer vase life. However, storage and transportation conditions are not always adequate and may lead to negative consequences on postharvest physiology and the quality of these flowers. Thus, this study determined the effect of pulsing treatment containing methyl jasmonate (MeJA) or salicylic acid (SA) in association with sucrose on the postharvest physiology of Bird of Paradise. Two independent experiments were carried out. In the first one, floral stems were treated with 100, 250 and 400 μmol L -1 of MeJA plus 200 g L -1 of sucrose for 24 h. In the second experiment, the treatments consisted of 2, 4 and 6 mmol L -1 of SA in association with 200 g L -1 sucrose for 24 h. After the pulsing treatment, the floral stems of both experiments were kept in containers with water at room temperature. The analyses were performed on days 0 and 7 and the assessment comprised: water uptake rate, transpiration rate, fresh mass loss, electrolyte leakage, peroxidase activity (POD) and phenolic compounds of the bracts and sepals. MeJA and SA reduced the water uptake rate by the stems. SA reduced transpiration rate, loss of fresh mass and phenolic compounds of sepals on day 0. On day 7, MeJA treatment reduced electrolyte leakage and increased POD activity. Otherwise, SA had no effect on electrolyte leakage and reduced POD activity. These results suggest that MeJA and AS act antagonistically on the electrolyte leakage and POD activity which might promote different effects on the postharvest physiology of Bird of Paradise stems, such as adverse patterns of the transpiration rate.Key words: peroxidase; plant growth regulators; Strelitzia reginae; transpiration Metil jasmonato e ácido salicílico na fisiologia pós-colheita de Ave do Paraíso RESUMO A Ave do Paraíso (Strelitzia reginae Banks) tem grande potencial de mercado devido à sua beleza intrínseca e longa vida de vaso. Contudo, as condições de armazenamento e transporte nem sempre são adequadas e podem levar a consequências negativas sobre a fisiologia e qualidade pós-colheita dessas flores. Portanto, este estudo determinou o efeito do pulsing de metil jasmonato (MeJA) ou ácido salicílico (AS) em associação com a sacarose na fisiologia pós-colheita de flores de Ave do Paraíso. Para isso, dois experimentos independentes foram realizados. No primeiro experimento, as hastes florais foram tratadas com 100, 250 e 400 µmol L -1 de MeJA juntamente com 200 g L -1 de sacarose por 24 h. No segundo experimento, os tratamentos consistiram de 2, 4 e 6 mmol L -1 de AS em associação com 200 g L -1 de sacarose por 24 h. Após a aplicação do pulsing, as hastes florais de ambos os experimentos foram armazenadas em recipientes com água e conduzidos a temperatura ambiente. As análises foram realizadas nos dias 0 e 7 e a avaliação compreendeu: taxa de absorção de água, taxa de transpiração, perda de massa fresca, extravasamento de eletrólito, atividade de peroxidase (POD) e compostos fenólico...

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Section: Introductionmentioning

confidence: 99%

Methyl jasmonate and salicylic acid on postharvest physiology of Bird of Paradise

Pereira

Gomes

Vieira

et al. 2017

Agraria

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Morphological and mechanical properties of Strelitzia reginae flowers depending on the solution used for conditioning

Szot¹,

Pogroszewska²,

Kozak³

et al. 2022

asphc

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Strelitzia reginae is an important cut flower native to South Africa. The effect of silicon and gibberellic acidwith sucrose as conditioners on the post-harvest quality of Strelitzia cut flowers was investigated. Inflorescence shoots were conditioned for 24 hours in: water solutions of Actisil 0.2% or gibberellic acid (GA3) – 200 mg∙dm–3 + sucrose 10% or distilled water (control). The shoots were then placed in distilled water or Chrysal Clear Professional 2 (10%). It was found that GA3 + sucrose and Actisil increased the size of orange sepals and blue petals when after conditioning, the shoots were placed in water or Chrysal. Conditioning in Actisil and storage in Chrysal increased the value of mechanical parameters of flowers, leading to greater flexibility and lower susceptibility to fracture. Conditioning the shoots in Actisil and keeping them in Chrysal extended the life of flowers by 2 days.

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Mechanical damage on Bird-of-Paradise (Strelitzia reginae) postharvest

Cited by 2 publications

References 6 publications

Methyl jasmonate and salicylic acid on postharvest physiology of Bird of Paradise

Methyl jasmonate and salicylic acid on postharvest physiology of Bird of Paradise

Morphological and mechanical properties of Strelitzia reginae flowers depending on the solution used for conditioning

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