Análise Comparativa Do Potencial Alelopático Do Óleo Essencial De Thymus Vulgaris E Seu Constituinte Majoritário Na Germinação E Vigor De Sementes De Alface (Lactuca Sativa L.)

Miranda, Cíntia Alvarenga Santos Fraga de; Cardoso, Milton Ghedini; Carvalho, María Laene Moreira de; Machado, Samísia Maria Fernandes; Andrade, Milene Aparecida; Oliveira, Christiane Maria de

doi:10.18674/exacta.v8i2.1516

Cited by 3 publications

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“…Moreover, Miranda et al (2015b) state it is of paramount importance to perform comparative analyzes of essential oil allelopathic effects and their major constituents.…”

Section: Essential Oil Chemical Analysismentioning

confidence: 99%

“…Within this context, several pieces of research have proven the allelopathic action in species of botanical substances, such as Poaceae, Euphorbiaceae, Lamiaceae, Asteraceae, among others. (Oliveira, Belinelo, Almeida, Aguilar, & Vieira Filho, 2011;Miranda et al, 2015b;Leite, Silva, M. Santos, A. Santos & Costa, 2015;Alencar et al, 2015). Asteraceae, Research, Society and Development, v. 9, n. 12, e1991210450, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i12.10450 6 one of the most numerous groups within the Angiosperms, has approximately 24,000 species grouped into more than 1,600 genera comprising mostly small herbs and shrubs, and rarely trees.…”

Section: Introductionmentioning

confidence: 99%

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Chromatographic profile and allelopathic potential of the essential oil of Acritopappus confertus (Gardner) R. M. King & H. Rob. (Asteraceae)

Sousa

Leite

Linhares

et al. 2020

RSD

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The present study aims to test the Acritopappus confertus (Gardner) R. M. King & H. Rob. essential oil allelopathic potential on the germination and inital development of Cenchrus echinatus L. and Lactuca sativa L. seedlings, in addition to identifying and quantifying chemical constituents. The chemical composition analysis was performed by gas chromatography (GC-FID) and gas chromatography coupled to mass-spectrometry (GC-MS). For the allelopathic assays, the essential oil was emulsified with dimethylsulfoxide (DMSO) in a 1:1 ratio, and diluted in distilled water to obtain 0.001, 0.01, 0.10, 0.25, 0.50, 0.75 and 1% c. The control consisted of 1% aqueous DMSO solution.Treatments were performed in five repetition with 20 seeds each. The pH of the oils were measured and adjusted to a scale of 6 to 7. Assays were conducted in a germination chamber at 25 °C with a 12h photoperiod. Seed germination, Germination Speed Index (GSI), caulicle and radicle length were analyzed. The data were subjected to analysis of variance and the means were compared by Tukey test (p<0.05), through the ASSISTAT. The constituents mycene, β-pinene and limonene stood out the most in chemical analysis. The essential oil did not influence C. echinatus and L. sativa seed germination, however it influenced GSI and seedling development. The effects observed herein may be due to chemical constituents found in the studied species, which may act in an isolated or combined manner.

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“…Moreover, Miranda et al (2015b) state it is of paramount importance to perform comparative analyzes of essential oil allelopathic effects and their major constituents.…”

Section: Essential Oil Chemical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chromatographic profile and allelopathic potential of the essential oil of Acritopappus confertus (Gardner) R. M. King & H. Rob. (Asteraceae)

Sousa

Leite

Linhares

et al. 2020

RSD

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“…Thyme has insecticidal, fungicidal, antioxidant and phenolic properties. It could be used as a food condiment, as a spice (Miranda et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Accelerated Aging Test in Thyme Seeds (Thymus vulgaris L.)

Lourenço

Sá

Yamashita

et al. 2021

JAS

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Evaluating seed quality with precision and accuracy is one of the priorities for obtaining high quality material. This study aimed to evaluate whether the variations in the performance of the accelerated aging test, in terms of exposure time and temperature, in the traditional form or in saline solution, would result in an efficient combination to evaluate the physiological quality of thyme seeds (Thymus vulgaris L.). The seeds were submitted to the tests of total germination, germination speed index, first germination count, seedlings emergence, seedling length, seedling dry mass, cold test, electrical conductivity, variations in the conduction of the accelerated aging test and the water content of the seeds was performed after each accelerated aging period. The treatments were the combination of temperatures (36, 38, 40 and 42 ºC), exposure time (24, 36, 48 and 72 hours) and two procedures (traditional and saline), with four replications for each batch. Traditional accelerated aging test at 42 ºC and 24 hours of exposure time, and saline solution accelerated aging test at 38 ºC and 24 hours of exposure time showed sensibility to evaluate physiological potential for thyme seed. For both saline solution and traditional accelerated aging test, the exposition time of 24 hours was efficient to evaluate physiological potential of thyme seeds.

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Pesquisa na Cadeia de Suprimentos de Plantas Aromáticas

Santos¹

2019

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Análise Comparativa Do Potencial Alelopático Do Óleo Essencial De Thymus Vulgaris E Seu Constituinte Majoritário Na Germinação E Vigor De Sementes De Alface (Lactuca Sativa L.)

Abstract: . Os componentes majoritários do óleo essencial de T. vulgaris foram o timol

Cited by 3 publications

References 1 publication

Chromatographic profile and allelopathic potential of the essential oil of Acritopappus confertus (Gardner) R. M. King & H. Rob. (Asteraceae)

Chromatographic profile and allelopathic potential of the essential oil of Acritopappus confertus (Gardner) R. M. King & H. Rob. (Asteraceae)

Accelerated Aging Test in Thyme Seeds (Thymus vulgaris L.)

Pesquisa na Cadeia de Suprimentos de Plantas Aromáticas

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