EFEITO ALELOPÁTICO DO EXTRATO ETANÓLICO E AQUOSO BRUTO DE Miconia stenostachya DC. NA GERMINAÇÃO E DESENVOLVIMENTO INICIAL DE Lactuca sativa L.
EFEITO ALELOPÁTICO DO EXTRATO ETANÓLICO E AQUOSO BRUTO DE Miconia stenostachya DC. NA GERMINAÇÃO E DESENVOLVIMENTO INICIAL DE Lactuca sativa L.
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DOI: https://doi.org/10.22533/at.ed.507112501045
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Palavras-chave: Aleloquímicos, Metabólitos secundários, Efeito inibitório.
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Keywords: Allochemistry, Secondary metabolites, Inhibitory effect.
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Abstract: Allelopathic activity may contribute to the sustainable management of agricultural crops. The objective of this work was to investigate the allelopathic effect of ethanolic aqueous extracts of Miconia stenostachya DC. On germination and seed development of Lactuca sativa L. The botanical material was collected in the Belmonte district of Crato-CE. The aqueous extract and ethanolic extract of leaves was prepared. The experiments were carried out in a BOD-type germination chamber at a temperature of 25 ° C in a 12-hour photoperiod for 7 days, with six treatments consisting of five replicates. The allelopathic effect of the species of M. stenostachya was evaluated through the following variables: number of germinated seeds, IVG, caulicle length and radicle. Statistical analysis was performed in ASSISTAT 7.7 program. The aqueous extract of M. stenostachya inhibited the germination of lettuce seeds at all concentrations tested by completely inhibiting at 100% concentration. The aqueous extract caused delay in the rate of germination (IVG) and at the root length caused inhibition at all concentrations tested being more accentuated at the 50% concentration. The length of the radicle was negatively influenced at all concentrations, with a stronger inhibition at the concentration of 12.5%. The ethanolic extract did not cause significant effects on the target species in the variables germination, IVG and radicle length, only in the caulicle length there was a positive allelopathic effect with a stimulus of the growth of the caulículo from the concentration of 12.5%. The species under study causes both inhibitory and stimulatory effects on the growth and development of the target seedlings.
- José Weverton Almeida Bezerra
- Elania Alves Barbosa
- Maria Arlene Pessoa da Silva
- Ademar Maia Filho
- Rizelle de Oliveira Barros
- Larissa Ferreira Da Silva
- Maria Aparecida Barbosa Ferreira Gonçalo
- Gabriel de Oliveira Lôbo
- Paula Patrícia Marques Cordeiro
- Antonio César Vieira da Silva
- Jefferson de Sales Diodato
- Mylena de Moura Marcelino
- Maria Bethânia de Sousa Ferreira Braga
- Anna Lídia Nunes Varela
- Alessandro Martins Ribeiro
- João Pereira da Silva Junior
- Anita Oliveira Brito Pereira Bezerra Martins
- Luciene Ferreira de Lima
- Marcos Aurélio Figueirêdo dos Santos
