Suppressive effect of trehalose on apoptotic cell death leading to petal senescence in ethylene-insensitive flowers of gladiolus

Yamada, Tetsuya; Takatsu, Yasumasa; Manabe, Toru; Kasumi, Masakazu; Marubashi, Wataru

doi:10.1016/s0168-9452(02)00403-x

Cited by 86 publications

(48 citation statements)

References 42 publications

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“…According to Yamada et al (2003), the increase of vase-life is the main goal researched in cut flowers. Results of these studies showed that V. incurvata floral scapes kept in a postharvest room with a temperature of 20 ± 2 °C and relative humidity of 80 ± 3% showed longevity of 14.9 ± 1.5 days, and it corresponds to the stage IV of the senescence scale ( Figure 1; and 2).…”

Section: Resultsmentioning

confidence: 99%

Behavior and postharvest evaluation criteria of Vriesea incurvata Gaudich. (Bromeliaceae) floral scapes

Pulido

Cuquel

Negrelle

2017

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Genus Vriesea of the Bromeliaceae family are highly appreciated to use as ornamental plant due to their floral morphological characteristics, color and the beauty of inflorescences. V. incurvata has been commercialized as a potted ornamental plant. The morphological features of its floral scape may also indicate it for use as a cut flower. However, there are no information available to use of this bromeliad as a cut flower. The aim of this study was to determine quantitative and qualitative criteria in order to evaluate the postharvest behavior of V. incurvata floral scapes. It was observed that V. incurvata floral scapes has great potential to use as cut flower, which has an average of vase-life of 14.9 ± 1.5 days. Quantitative and qualitative characteristics such as color (L*, C*, H°), brightness, turgidity, stiffness, presence of injuries, relative fresh weight, water uptake and loss can be indicated as postharvest evaluation criteria of V. incurvata floral scapes. Keywords: bromeliads, cut flowers, ornamental plant, senescence, vase-life. RESUMO Comportamento e critérios de avaliação pós-colheita de escapos florais de Vriesea incurvata Gaudich. (Bromeliaceae)O gênero Vriesea da família Bromeliaceae é altamente apreciado por seu uso como planta ornamental devido a suas características morfológicas florais, colorido e beleza das inflorescências. A comercialização de V. incurvata é como planta ornamental de vaso. As características morfológicas de seu escapo floral podem também indicá-la para uso como flor de corte. Contudo, não há informações disponíveis sobre o uso desta bromélia como flor de corte. O objetivo deste estudo foi determinar critérios quantitativos e qualitativos para avaliar o comportamento pós-colheita de escapos florais de V. incurvata. Observou-se que os escapos florais de V. incurvata apresentam grande potencial como flor de corte, alcançando uma vida de vaso média de 14,9 ± 1,5 dias. As características quantitativas e qualitativas como cor (L*, C*, H°), brilho, turgescência, rigidez, presença de injurias, massa fresca relativa, absorção e perda de água, podem ser indicados como critérios de avalição na pós-colheita de escapos florais de V. incurvata. Palavras-chave: bromélias, flores de corte, planta ornamental, senescência, vida de vaso.

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Section: Resultsmentioning

confidence: 99%

Behavior and postharvest evaluation criteria of Vriesea incurvata Gaudich. (Bromeliaceae) floral scapes

Pulido

Cuquel

Negrelle

2017

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“…Vase life is a standard for postharvest longevity of cut flowers and longer vase life is an important target for improving flower characteristics (YAMADA et al, 2003). Gladiolus cut inflorescences have a short vase life, ranging from 3 to 5 days, depending upon the cultivar (SEREK et al, 1994;KUMAR et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Potential use of germicides in vase solutions for gladiolus ‘White Friendship’

Cásares

Mattiuz

Muniz

et al. 2017

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Gladiolus (Gladiolus x hortulanus) is one of the most important crops for cut flowers worldwide, however having a short longevity. Usually, stems are harvested at the bud stage and need water and carbohydrates to support inflorescence development and to ensure flower quality. Vase solutions can supply these elements. However, sugars may benefit bacterial proliferation, which eventually can block xylem vessels. Bactericides potentially inhibit microorganism proliferation and new compounds are being tested constantly. This experiment was conducted to evaluate 'White Friendship' cut gladiolus performance in vase solutions with sodium dichloroisocyanurate dihydrate (Na-DCC), 8-hydroxyquinoline (8-HQ) or polymeric biguanide (PB). Inflorescences harvested at commercial maturity were placed in distilled water with 4% w/v of sucrose plus the germicides and kept under ambient conditions. Vase life, inflorescence postharvest development, fresh mass, membrane stability index and water relations were evaluated. There were no visual symptoms of toxicity in the treatments. The highest values of vase life, fully-open flowers, fresh mass and water balance were obtained with the Na-DCC treatment. Inflorescences treated with 8-HQ exhibited the highest values of solution uptake and wilting flowers. PB had a limited effect in gladiolus postharvest since the obtained results were similar to the sucrose alone. There was no effect of germicides on membrane stability index and its reduction was due to flower senescence progress only. Vase solution with Na-DCC plus sucrose improved water balance, increased open flowers, reduced wilting of flowers and fresh mass loss. Therefore, vase solutions with sucrose 4% w/v and Na-DCC enhance postharvest quality of cut gladiolus inflorescences. Keywords: antimicrobial agents, flower quality, postharvest conservation, vase life. resumo Potencialidade do uso de germicidas em solução de manutenção para gladíolos 'White Friendship' O gladíolo (Gladiolusx hortulanus) é uma das culturas mais importantes para flores cortadas em nível mundial, possuindo curta longevidade após o corte. Normalmente, as hastes são colhidas ainda no estádio de botão e precisam de água e carboidratos para sustentar o desenvolvimento pós-colheita da inflorescência e garantir a qualidade das flores. Para suprir essas necessidades são utilizadas soluções de vaso. No entanto, os açúcares presentes podem favorecer a multiplicação das bactérias, que bloqueiam os feixes vasculares. O uso de bactericidas evita o crescimento e a proliferação de microrganismos. O objetivo deste trabalho foi avaliar o comportamento pós-colheita do gladíolo 'White Friendship' mantido em soluciones de vaso com: dicloroisocianurato de sódio dihidratado (Na-DCC), 8-hidroxiquinolina ou biguanida polimérica (PB). Inflorescências com botões fechados foram colocadas em solução de água destilada com 4% w/v de sacarose, acrescida dos germicidas e armazenadas em condição de ambiente. Foram avaliadas vida de vaso, desenvolvimento pós-colheita da inflorescênci...

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“…Vase-life is a yardstick for the longevity of cut flowers and is an important target for improving flower characteristics, whether by chemical treatment or plant breeding (Yamada et al 2003).…”

Section: Introductionmentioning

confidence: 99%