Chemical characterization and alelopatic activity of essential oil of leaves of Blepharocalyx salicifolius

Authors

DOI:

https://doi.org/10.4336/2021.pfb.41e201902042

Keywords:

Plant extracts, Chemical composition, Allelopathy

Abstract

In the present study we evaluated the chemical composition and allelopathic activity of the essential oil (EO) of Blepharocalyx salicifolius (Kunth) O. Berg leaves on the germination and initial growth of Lactuca sativa L. (dicotyledonous) and Sorghum bicolor (L.) Moench (monocotyledon). EO was obtained by hydrodistillation for 3 h. The EO composition analysis was performed by gas chromatography coupled to a mass spectrometry (GC-MS). The allelopathic activity of EO was evaluated at 2.5; 5.0 and 7.5%. The seeds were immersed in the solution for 2 min., distributed in Petri dishes, that were maintained in a BOD incubator. On the seventh day, the variables germination (%), root length (cm), shoot length (cm) and total seedling length (cm) were evaluated. The major constituents identified in the OE were eucalyptol (49.6%), limonene (13.6%) and β-caryophyllene (12.2%). The EO affected negatively the germination percentage of L. sativa seeds and the root system and total seedling length of S. bicolor. There was a negative allelopathic activity against the two evaluated species.

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Author Biographies

Bruno Silva de Oliveira, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Ciências Florestais

http://lattes.cnpq.br/0528241504928624

Carlos Garrido Pinheiro,  Universidade Federal de Santa Maria, Programa de Pós-Graduação em Engenharia Florestal

http://lattes.cnpq.br/0255167092609424

Nadia Helena Bianchini, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Ciências Florestais

http://lattes.cnpq.br/1962877501336147

Bibiana Fontana Batista, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Ciências Florestais

http://lattes.cnpq.br/5795730921369530

Alana Silveira Pavlack, Universidade Federal de Santa Maria, Centro de Ciências Rurais, Departamento de Ciências Florestais

http://lattes.cnpq.br/6581524597977672

Berta Maria Heinzmann, Universidade Federal de Santa Maria, Centro de Ciências da Saúde, Departamento de Farmácia Industrial

http://lattes.cnpq.br/0786124562427815

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Published

2021-12-13

How to Cite

DE OLIVEIRA, Bruno Silva; PINHEIRO, Carlos Garrido; BIANCHINI, Nadia Helena; BATISTA, Bibiana Fontana; PAVLACK, Alana Silveira; HEINZMANN, Berta Maria. Chemical characterization and alelopatic activity of essential oil of leaves of Blepharocalyx salicifolius. Pesquisa Florestal Brasileira, [S. l.], v. 41, 2021. DOI: 10.4336/2021.pfb.41e201902042. Disponível em: https://pfb.sede.embrapa.br/pfb/article/view/2042. Acesso em: 8 mar. 2026.

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Vol. 41 (2021)

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Copyright (c) 2021 Bruno Silva de Oliveira, Carlos Garrido Pinheiro, Nadia Helena Bianchini, Bibiana Fontana Batista, Alana Silveira Pavlack, Berta Maria Heinzmann

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