Allelopathic interference of Hovenia dulcis extracts on the germination and development of Parapiptadenia rigida

Dane Block Araldi; Carlos Garrido Pinheiro; Ervandil Corrêa Costa; Danilo Boanerges Souza; Berta Maria Heinzmann

doi:10.4336/2025.pfb.45e202102237

Autores

Dane Block Araldi Universidade Federal de Santa Maria https://orcid.org/0000-0002-0606-326X
Carlos Garrido Pinheiro Universidade Federal de Santa Maria https://orcid.org/0000-0002-1634-8015
Ervandil Corrêa Costa Universidade Federal de Santa Maria https://orcid.org/0000-0001-7348-8826
Danilo Boanerges Souza Universidade Federal de Santa Maria https://orcid.org/0000-0002-3155-6736
Berta Maria Heinzmann Universidade Federal de Santa Maria https://orcid.org/0000-0002-6509-949X

DOI:

https://doi.org/10.4336/2025.pfb.45e202102237

Palavras-chave:

Aleloquímicos, Maceração, Percolação

Resumo

Este trabalho relata a influência de extratos etanólicos de folhas frescas e secas, pseudofrutos, sementes, cascas e raízes da planta invasora Hovenia dulcis Thunb. Na germinação de sementes e no desenvolvimento de plântulas da árvore nativa Parapiptadenia rigida (Benth.) Brenan. Órgãos adultos e jovens frescos de H. dulcis foram extraídos por maceração, enquanto os extratos do material vegetal seco e pulverizado correspondentes foram obtidos por percolação com soxhlet. Os parâmetros germinação, índice de velocidade de emergência (IVE), comprimento e massa seca de radículas e hipocótilos de P. rigida foram avaliados sob a influência de extratos de H. dulcis nas concentrações de 0, 25, 50, 75 e 100 mg mL^-1. Os extratos de materiais vegetais frescos proporcionaram rendimentos que variaram entre 5,7 e 9,7%, enquanto os extratos de órgãos secos apresentaram valores que variaram de 14,0 a 35,5%. A atividade alelopática dos extratos sobre P. rigida diferiu de acordo com o órgão vegetal da espécie doadora e mostrou-se dependente da concentração, além de ser influenciada pelo estado do material vegetal extraído. Os efeitos alelopáticos dos extratos de H. dulcis sobre P. rigida afetaram diferentes estágios de seu desenvolvimento e foram causados por aleloquímicos presentes em órgãos vegetais distintos.

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Biografia do Autor

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