Postharvest quality of red gerberas depending on the storage temperature

Muniz, Ana Carolina Corrêa; Galati, Vanessa Cury; Marques, Kelly Magalhães; Mattiuz, Cláudia Fabrino Machado; Mattiuz, Ben-Hur

doi:10.1590/0103-8478cr20151627

Cited by 7 publications

(8 citation statements)

References 17 publications

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“…According to Muniz, Galati, Marques, Mattiuz, and Mattiuz (2016), lower temperatures slow the ageing and deterioration of gerbera flower tissue, as its metabolism decreases while maintaining the quality of flowers for a longer time.…”

Section: Resultsmentioning

confidence: 99%

Conservation of Alstroemeria cut flowers stored under refrigeration

et al. 2020

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Alstroemeria flowers have shown great importance in the world trade of cut flowers due mainly to its beauty and wide variety of colors. However, the durability of its inflorescences is usually hampered by the rapid yellowing of the leaves, which impairs their decorative quality. Cut flowers require the use of technologies to improve postharvest quality and floral longevity. This research aimed to study the postharvest conservation of inflorescences of Alstroemeria cv. Ajax at different storage temperatures. Floral stems were placed in containers with distilled water and stored at four temperatures (4, 8, 12, and 22ºC) for 12 days. The following analyses were performed: fresh mass variation, respiratory activity, relative water content, soluble and reducing carbohydrate contents, polyphenol-oxidase and peroxidase enzymes, pigments (anthocyanin and carotenoids), and longevity. The experiment was conducted in a completely randomized design, the results were submitted to analysis of variance (ANOVA), and the effect of treatments submitted to F-test. Significant differences were compared using the least significant difference (LSD) at 95% confidence interval (p ≤ 0. 05). The temperatures of 8 and 12ºC were effective in maintaining the postharvest quality of inflorescences during storage period, as they remained turgid due to transpiration reduction caused by low temperatures, and longevity reaching 46 and 22 days, respectively.

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Section: Resultsmentioning

confidence: 99%

Conservation of Alstroemeria cut flowers stored under refrigeration

et al. 2020

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“…The trend is, however, contrary to the results of postharvest studies on red gerbera (Gerberajamesonii cv. Intenza) in which unstored cut flowers registered higher levels of total soluble sugars (Muniz et al, 2016). The preservation of dry matter and retardation in starch hydrolysis has been reported in cut rose flowers treated with carbohydrates and biocide solutions (Reid, 2009).…”

Section: Total Starch and Total Soluble Sugarsmentioning

confidence: 88%

Changes in carbohydrates associated with senescence of cut gladiolus spikes under pulsing and wet cold storage durations

Chore¹,

Mwangi²,

Karori³

et al. 2020

Afr. Crop Sci. J.

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Several biochemical and metabolic changes are associated with senescence of cut gladioli, particularly in relation to quality characteristics, including dynamism of carbohydrates. The objective of this study was to evaluate the effect of pulsing and wet cold storage on the starch and sugar biomarkers on cut Gladiolus (Gladiolus grandiflorus L. cv. Fado) vase quality. Pulsing treatments of 600-ppm 8-hydroxyquinoline sulphate, plus 5% sucrose solution, versus distilled water, were administered prior to wet cold storage durations of 0 - 5 days, on the cut Gladiolus grown from corms. This was done in the open field at the Horticulture Research and Teaching Field, Egerton University in Kenya, during two successive seasons. There was a significant difference (P <0.01) in total soluble sugars (TSS) and total starch of spikes pulsed with 600 ppm 8 - HQS + 5% sucrose, compared with the control, during the third day in the vase life of the cut flowers. Prolonged vase life of cut spikes was associated with a decrease in total soluble sugars and increase in total starch, as influenced by pulsing and wet storage duration up to 4 days.

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“…Muniz et al (2016) have verified that ligules of inflorescences of gerberas 'Intenza' showed values of total soluble sugar of 0.47%, being this 9x smaller that did not find work for inflorescences at the commercial point. The data confirm the importance of the carbohydrate reserve for floral longevity, due to the proportionality between these parameters.…”

Section: Resultsmentioning

confidence: 86%

Non-structural carbohydrate metabolism and postharvest conservation of gerbera flowers

Alves

Pimentel

Silva

et al. 2017

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The species Gerbera jamesonii Adlam has great economic importance in the ornamental sector, due to exuberance of floral stems. However, florists face some challenges such as postharvest handling and difficulty of conservation. Therefore, this study aimed to characterize the non-structural carbohydrate content in different floral stages of G. jamesonii var. Dawn and evaluate the effect of preservative solutions during the postharvest storage of this species. For this purpose, it was quantified TSS, RS and NRS from the seven stages of gerbera stems ontogeny (E1, E2, E3, E4, E5, E6 and E7). The preservative solutions used were: T1) distilled water; T2) citric acid (100 mg L -1 ); T3) glucose (20 g L -1); T4) gibberellic acid (GA 3 , 5 mg L -1 ); T5) calcium chloride (CaCl 2 , 20g L -1 ) and T6) Sodium Thiosulphate (STS, 20 mM). The effect of preservative solutions were assessed daily, considering the longevity of flowers, variation in the absorption of preservative solution, pH of the solution and fresh mass variation. The experimental design was completely randomized with four replicates. There was a difference in carbohydrate metabolism during floral opening and senescence. In the orange bracts there was a lower TSS content, while in the inflorescences it was observed a reduction in the yellowish, greenish-green and greenish stages. The content of RS increased in the bracts, whereas in the inflorescence there was no difference. The NRS content was higher in the orange bracts, showing lower rates in the inflorescences in yellowish and yellowish greenish stages. The preservative solutions had an impact, on the floral stem longevity, varying according to the solutions used, i.e. CaCl 2 and STS reduced the durability of gerbera flower in 9.25 and 11.5 days, respectively, compared to stems kept in distilled water. The glucose solution did not promote a significant difference compared to water. Therefore, we conclude that there is variation in the metabolism of non-structural carbohydrates during the floral development of G. jamesonii var. Dawn and the tested solutions were not effective in promoting postharvest conservation of gerbera. Keywords: Gerbera jamesonii, sugars, floral stem, preservative solutions. RESUMO Metabolismo de carboidratos não estruturais e conservação pós-colheita de gérberaA espécie Gerbera jamesonii Adlam tem grande importância econômica no setor ornamental, devido à exuberância das hastes florais. Contudo, os floricultores enfrentam alguns entraves como o manuseio pós-colheita e a dificuldade de conservação. Assim, este trabalho teve como objetivo caracterizar o metabolismo de carboidratos não estruturais das hastes florais de G. jamesonii var. Dawn e avaliar o efeito de soluções conservantes ao longo do armazenamento pós-colheita. Para este propósito, quantificou-se o teor de açúcar solúvel total (AST), açúcar redutor (AR) e açúcar não redutor (ANR) de brácteas e inflorescências de gérbera, classificadas em sete estádios (E1, E2, E3, E4, E5, E6 e E7). As soluções conservantes usadas fo...

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Postharvest quality of red gerberas depending on the storage temperature

Abstract: This study aimed to verify the best storage temperature in the postharvest quality conservation of inflorescences of gerberas cv. 'Intenza'. Inflorescences were kept in distilled water

Cited by 7 publications

References 17 publications

Conservation of Alstroemeria cut flowers stored under refrigeration

Conservation of Alstroemeria cut flowers stored under refrigeration

Changes in carbohydrates associated with senescence of cut gladiolus spikes under pulsing and wet cold storage durations

Non-structural carbohydrate metabolism and postharvest conservation of gerbera flowers

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