Qualidade de rosas de corte tratadas com produtos naturais

Pietro, Júlia de; Mattiuz, Ben-Hur; Mattiuz, Cláudia Fabrino Machado; Rodrigues, Teresinha de Jesus Deléo

doi:10.1590/s0103-84782012005000071

Cited by 15 publications

(19 citation statements)

References 11 publications

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“…During DAH, there was a reduction in the color angle, probably due to the slight darkening of petals, evidenced by the small increase in chromaticity in the period, which agrees with results presented by Pietro et al (2012) on post-harvest fl owers.…”

Section: Resultssupporting

confidence: 91%

Postharvest aspects of roses

Castricini

Almeida²,

Reis³

et al. 2017

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This study aimed to evaluate respiratory activity, color changes and fresh weight variation of 'Carola' (red), 'Avalanche' (white) and 'Avalanche Chá' (tea) roses for seven days after harvest. Respiratory activity, coloration of petals and fresh weight loss were evaluated. Treatments were composed of three rose cultivars and seven days of evaluation, in a 3 x 7 factorial and a completely randomized design with four replicates of two flowers per plot. To determine the respiratory activity, in addition to the four replicates, an "experimental control" was used as a fifth replicate without roses. 'Avalanche' and 'Avalanche Chá' roses with petals of similar luminosity showed no browning during days after harvest, but are distinct in terms of chromaticity. 'Carola' rose has less shiny petals. On harvest day, the respiratory activity is elevated and reduces later until the fourth day, in which there is elevation of this parameter again coinciding with high fresh weight loss. During days after harvest, small changes in the color of petals were observed; however, the main changes were observed in respiratory activity and fresh weight loss. Keywords: Rosa sp, petal color, physiology, fresh weight loss. RESUMOObjetivou-se avaliar a atividade respiratória, as mudanças de cor e a variação da massa fresca de rosas 'Carola', 'Avalanche' e 'Avalanche Chá' durante sete dias após a colheita. Foram avaliadas a atividade respiratória, coloração das pétalas e perda de massa fresca. Os tratamentos foram constituidos por três cultivares de rosas e sete dias de avaliação em esquema fatorial 3 x 7, em delineamento inteiramente casualizado com quatro repetições de duas flores por parcela. Para a determinação da atividade respiratória, além das quatro repetições, utilizou-se um controle experimental constituido por uma quinta repetição sem conter as rosas. Rosas 'Avalanche' e 'Avalanche Chá'que possuem pétalas com luminosidade semelhante, mas cromaticidade distinta, não apresentaram escurecimento ao longo dos dias avaliados após a colheita. Já a rosa 'Carola' tem pétalas menos brilhantes. No dia da colheita a atividade respiratória é elevada e sofre redução posteriormente até o quarto dia, no qual volta a exibir elevação deste parâmetro de forma coincidente com a elevada perda de massa fresca. Durante os dias após a colheita ocorreram pequenas mudanças na cor das pétalas, entretanto, as principais modificações verificadas foram na atividade respiratória e na perda de massa fresca. Palavras-chave: Rosa sp., coloração de pétalas, fisiologia, perda de peso fresco

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Section: Resultssupporting

confidence: 91%

Postharvest aspects of roses

Castricini

Almeida²,

Reis³

et al. 2017

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“…As rosas produzidas em Pelotas apresentaram uma durabilidade média de 9 dias (Tabela 2), mesmo resultado encontrado por Pietro et al (2012) em experimento com rosas da mesma variedade, e de acordo com o período médio normalmente verificado para a espécie, que é de 10 dias (ASGHARI et al, 2014). O primeiro descarte, de apenas uma haste, ocorreu aos 3 dias, por perda de turgidez abaixo do receptáculo floral e por queda de pétalas.…”

Section: Resultsunclassified

Durabilidade de rosas, gérberas e crisântemos comercializados em Pelotas-RS

Fischer¹,

Stumpf²,

Castro³

et al. 2015

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Cut flowers are one of the most important floricultural products and one of the features that define its quality is vase life. Thus, longer vase life will be achieved when production sites are closer to the consumer market. Based on the above, this experiment compared vase life of rose, gerbera and chrysanthemums supplied by Pelotas’s local growers and by São Paulo’s wholesalers. For each treatment (origin), 20 stems of each species were evaluated. Randomized block design were used with five repetitions of four stems per block and vase life assessment performed every three days during 15 days. Vase life was higher for roses and gerberas produced in Pelotas, average of 9 and 7 days, respectively. No significant difference was observed to chrysanthemum vase life, average were 12 days for both flower origins. The results indicate that the distance between the production sites and the consumer market influences the quality and vase life of roses and gerberas marketed in Pelotas.

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“…In other cultivars, such as 'Yellow', 'Orange' and 'Pink', the treatment with methyl jasmonate leads to a smaller loss of petal colors and increased pot life (MEIR et al, 2005). Spraying with methyl jasmonate (500μM) also favors the post-harvest quality of 'Vega' stems, conferring smaller fresh weight loss, lower respiratory rate and lower consumption of reducing carbohydrates (PIETRO et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Storage and methyl jasmonate in postharvest conservation of roses cv. Avalanche

Manfredini

Paiva

Almeida

et al. 2017

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The use of methyl jasmonate has demonstrated its efficiency to extend the vase life of cut flowers. The objective of this study was to evaluate the effect of methyl jasmonate associated with storage at low temperatures on the postharvest quality of Rosa cv. Avalanche stems. The treatments consisted of 125, 250, 500 and 1000 μM of methyl jasmonate, besides the control with distilled water. The flower buds were sprayed with 4 mL of the solution, according to the treatments, and then kept in a cold chamber (1 °C) for periods of 2 and 6 days. Subsequently, the stems were taken to the postharvest laboratory at a temperature of 16 °C. Better quality, higher fresh weight and water absorption were observed in flower stems stored for 2 days. The application of methyl jasmonate caused less turgescence and greater darkening of roses. It was possible to conclude that two days is the best storage time at 1 °C and the use of methyl jasmonate does not maintain the quality of roses cv. Avalanche after harvest.

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Qualidade de rosas de corte tratadas com produtos naturais

Cited by 15 publications

References 11 publications

Postharvest aspects of roses

Postharvest aspects of roses

Durabilidade de rosas, gérberas e crisântemos comercializados em Pelotas-RS

Storage and methyl jasmonate in postharvest conservation of roses cv. Avalanche

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