A Survey of Ethylene Contamination in Ontario=s Floriculture Industry and the Evaluation of 1-Methylcyclopropene and an Ethylene Absorber as Potential Solutions

Skog, L.J.; Blom, Theo J.; Schaefer, B.; Digweed, B.E.; Fraser, Henry; Brown, W F

doi:10.17660/actahortic.2001.543.5

Cited by 13 publications

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“…This treatment was also the one that achieved the highest anthocyanin content, with the greatest concentration on the 12 th day of storage. Skoog et al (2001) also observed that the treatment with 1-MCP at 0.5 g m -3 for six hours, provided an increase in carotenoid content in roses, Consolida ajacis, Antirrhinum majus, gypsophila, alstroemeria, lilies and poinsettias, being the results in agreement with those found in this experiment.…”

Section: Resultssupporting

confidence: 91%

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

et al. 2017

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Cut flowers deteriorate quickly and require postharvest technologies to increase their durability, which is usually around 8 days. Due to the scarce information related to postharvest physiology of Alstroemeria cut flowers, this study aimed to verify the best dose of 1-methylcyclopropene (1-MCP) to the postharvest conservation of inflorescences of Alstroemeria cv. Ajax, considering the factors associated with floral senescence and loss of the decorative life. The stems were submitted to four doses of 1-MCP (0; 100; 250; 500 ppb), then placed in containers with distilled water and stored at room temperature (22 ºC). The treatments were performed in triplicate containing three stems per replicate. The evaluations were performed every three days for a total of 12 days of storage. An F test was conducted, and the means were compared by the Tukey test (p≤0.05). Among the applied treatments the dose of 500 ppb of 1-MCP reduces the loss of water of the stems of alstroemerias during the storage period, keeping the petals turgids and the levels of carotenoids and anthocyanins high, however, this was not enough to keep the decorative quality of the flowers, once the 1-MCP did not solve the problems of yellowing of the leaves and floral openning, which are important characteristics for its commercialization.Index terms: Ethylene; longevity; pigments; enzyme activity. RESUMOAs flores de corte se deterioram muito rapidamente e necessitam de tecnologias pós-colheita para aumentar a durabilidade, que é normalmente em torno de 8 dias. Devido às escassas informações relacionadas à fisiologia pós-colheita de flores de Alstroeméria, a presente pesquisa teve como objetivo verificar qual a melhor dose de 1-metilciclopropeno (1-MCP) na conservação pós-colheita de inflorescências de Alstroemeria cv. Ajax, considerando os fatores associados à senescência floral e perda da vida decorativa. As hastes foram submetidas a quatro doses de 1-MCP (0; 100; 250; 500 ppb), posteriormente foram colocadas em recipientes com água destilada e armazenadas em temperatura de ambiente (22 ºC). Os tratamentos foram realizados em triplicata contendo três hastes por repetição. As avaliações foram realizadas a cada três dias perfazendo um total de 12 dias de armazenamento. Foi realizado um teste de F, e as médias comparadas pelo teste de Tukey (P≤0,05). Entre os tratamentos aplicados a dose de 500 ppb de 1-MCP reduziu a perda de água das hastes de alstroeméria durante o período de armazenamento, mantendo as pétalas túrgidas e os níveis de carotenoides e antocianinas altos, entretanto, isso não foi suficiente para manter a qualidade decorativa das flores, uma vez que o 1-MCP não resolveu os problemas de amarelecimento das folhas e abertura floral, que são importantes características para sua comercilização.Termos para indexação: Etileno; longevidade; pigmentos; atividade enzimática.

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Section: Resultssupporting

confidence: 91%

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

et al. 2017

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“…Apesar de não terem ocorrido diferenças significativas para a interação dos fatores, verifica-se que as inflorescências tratadas com o 1-MCP a 500 ppb apresentaram a melhor manutenção da cor vermelha, expressa pelo ângulo de cor, em relação aos demais tratamentos (Figura 5). De acordo com SKOG et al (2001), tratamentos com 1-MCP a 0,5 ppb, por seis horas, em espécies florais como rosas, esporinha, bocade-leão, gipsofila, alstroemeria, lírios e poinsetias, resultaram em qualidade superior das flores tratadas em relação às plantas controle, o que demonstra que o 1-MCP pode bloquear a ação do etileno (RUPASIN-GUE et al, 2000).…”

Section: Resultsunclassified

Efeito de agentes químicos na conservação pós-colheita de inflorescências de Alpinia purpurata (Vieill) K. Schum.

Mattiuz¹,

Mattiuz²,

Rodrigues³

et al. 2005

RBHO

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RESUMOAlpinia purpurata é uma flor tropical atualmente muito utilizada como flor de corte devido à beleza e durabilidade de suas inflorescências. O experimento foi realizado para verificar o efeito de diferentes compostos químicos, inibidores da ação do etileno e de bactericidas na conservação pós-colheita das inflorescências de alpínia. O experimento foi conduzido em delineamento inteiramente casualizado, em esquema fatorial, com cinco tratamentos e quatro repetições, com três inflorescências cada uma. Os tratamentos utilizaram água destilada, 500 ppb e 1000 ppb de 1-metilciclopropeno (1-MCP), 0,35 mL.L -1 de amônia quaternária, 1 mM de tiossulfato de prata (STS). Foram avaliados os aspectos qualitativos: cor, turgescência, escurecimento e curvatura das inflorescências. O tratamento com 1-MCP revelou-se o mais promissor para a preservação da qualidade das inflorescências durante os doze dias de vida de vaso. As alpínias foram muito sensíveis ao STS (1mM) e perderam a qualidade aos dois dias de vida no vaso.Palavras-chave: alpínia, 1-metilciclopropeno, pulsing, amônia quaternária, tiossulfato de prata. ABSTRACT Effect of chemicals agents on postharvest conservation of Alpinia purpurata (Vieill) K. Schum inflorescencesAlpinia purpurata is a tropical flower largely used as cut flower due to the beauty and durability of the inflorescences. The experiment was conducted to verify the effects of inhibitors of ethylene and bactericides, on conservation of red ginger cut flowers. The following treatments were used: 1) distilled water, 2) 500 ppb 1-methylcyclopropene (1-MCP), 3) 1000 ppb 1-MCP, 4) 0,35 mL.L -1 quaternary ammonium, 5) 1 mM silver thiosulphate. The qualitative aspects: color, turgor, browning and inflorescences curvature were evaluated. The 1-MCP treatment was the most promising for preservation of red ginger cut inflorescences during 12 days of vase-life. Red gingers inflorescences were very sensitive to STS (1 mM) and lost quality after two days of vase-life.

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“…In many floriculture crops, ethylene results in flower, bud, or leaf abscission, epinasty, and hastening of senescence (Gibson et al, 2000;Reid and Jiang, 2012). Skog et al (2001) measured ethylene levels in midsize to large wholesale and retail businesses in Ontario, Canada. Detectable levels of ethylene (>0.01 mL · L -1 ) were measured in 63% of air samples and these levels ranged from 0.01 to 10 mL · L -1 .…”

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confidence: 99%

“…Impatiens plants are highly sensitive to ethylene and show rapid flower abscission (overnight) when exposed to very low concentrations of ethylene (Dostal et al, 1991). Both Impatiens ·hawkeri (Dostal et al, 1991;Han, 2003) and I. walleriana can benefit from 1-MCP protection to improve postharvest quality (Han, 2003;Skog, 2001). Impatiens, therefore, can serve as an excellent model plant to investigate the use and efficacy of this novel 1-MCP formulation on floral crops.…”

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confidence: 99%

Evaluation of a Sprayable Formulation of 1-Methylcyclopropene in Floriculture

Filios¹,

Miller²

2016

horts

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We conducted a series of studies to determine the efficacy of a sprayable formulation of 1-methylcyclopropene (1-MCP; AFxRD-038) to inhibit ethylene-mediated flower abscission in Impatiens walleriana. Exposing Impatiens plants to 1.0 μL·L−1 ethylene for 18 hours caused complete abscission of open flowers and most buds. Sprays of the novel 1-MCP formulation at concentrations >2.5 mg·L−1 protected plants from ethylene. At 5 and 10 mg·L−1, the efficacy of 1-MCP increased as spray volume increased from 102 mL·m−2 to 306 mL·m−2. 1-MCP was rainfast with no decrease in efficacy resulting from heavy overhead irrigation within 1–2 minutes of application. Prepared 1-MCP solutions (10 mg·L−1) remained effective up to 2 weeks after mixing if held in airtight containers. The sprayable 1-MCP formulation provided protection against exogenous ethylene for a maximum of 4 days and reduced stress-related abscission from 3 days of darkness (in the absence of exogenous ethylene) at 20 °C or 40 hours darkness at 28 °C.

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A Survey of Ethylene Contamination in Ontario=s Floriculture Industry and the Evaluation of 1-Methylcyclopropene and an Ethylene Absorber as Potential Solutions

Cited by 13 publications

References 0 publications

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

Postharvest conservation of alstroemeria ‘ajax’ using 1-methylcyclopropene

Efeito de agentes químicos na conservação pós-colheita de inflorescências de Alpinia purpurata (Vieill) K. Schum.

Evaluation of a Sprayable Formulation of 1-Methylcyclopropene in Floriculture

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