Floresta e Ambiente
https://floram.org/article/doi/10.1590/2179-8087-FLORAM-2021-0011
Floresta e Ambiente
Original Article Silviculture

Phytotoxic activity and chemical composition of aqueous foliar extracts of Cerrado species

Sharmely Hilares Vargas, Elisangela Clarete Camili, Maria de Fatima Barbosa Coelho, Leonardo Gomes de Vasconcelos, Marcos Antônio Soares, Olivia Suzana Moreira Sampaio, Suzana Junges Vendruscolo

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Abstract

This study aimed to evaluate the phytotoxic activity of aqueous extracts of species from the Cerrado of Mato Grosso on the germination and initial development of lettuce seedlings, as well as to determine the chemical composition of the extracts. The species studied were: Davilla ellipticaCombretum laxumHimatanthus obovatusDiteryx alataCuratella americanaQualea grandifloraAspidosperma macrocarponCaryocar brasiliensePleroma candolleanum and Miconia albicans. Fourier Transform Infrared Spectroscopy (FTIR) and Thin Layer Chromatography (TLC) techniques were used to identify functional groups and chemical compounds. The extracts of the species D. ellipticaC. laxumC. brasiliense and Q. grandiflora showed greater phytotoxic activity on the germination of lettuce seeds which varied between 96 and 17%. The presence of compounds such as: phenols, alkaloids, flavonoids and terpenes with phytotoxic properties was confirmed.

Keywords

Allelochemicals; bioassays; FTIR; TLC; Lactuca sativa L.

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Submitted date:
02/26/2021

Accepted date:
06/11/2021

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