<b>Phytotoxic potential of <i>Drimys brasiliensis</i> Miers for use in weed control

  • Simoni Anese Universidade Federal de São Carlos.
  • Sonia Cristina Juliano Gualtieri Universidade Federal de São Carlos
  • Patrícia Umeda Grisi Universidade Federal de São Carlos
  • Luciana de Jesus Jatobá Universidade Federal de São Carlos
  • Marcos Arduin Universidade Federal de São Carlos
Palavras-chave: allelopathy, inhibition, germination, early growth.

Resumo

This study aims to evaluate the phytotoxicity potential of leaf and root extracts of Drimys brasiliensis on the germination and seedling growth of Panicum maximum and Euphorbia heterophylla and its influence on metaxylem cell size in the seedling roots of the latter specie. The leaf and root extracts were fractionated by partition chromatography, and the hexane and ethyl acetate fractions obtained from each organ were evaluated at different concentrations for phytotoxic activity in several bioassays. In seedling growth tests, we compared the effects of these fractions with the herbicide oxyfluorfen. The hexane fraction of the root extracts showed a higher inhibitory potential on the germination and growth of weeds and reduced the average size of the metaxylem cells of E. heterophylla roots by more than 50%.The inhibitory effects of the root hexane fraction on seedling growth was similar to the herbicide, indicating that D. brasiliensis is a possible alternative form of control for the weed species examined.

 

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Biografia do Autor

Simoni Anese, Universidade Federal de São Carlos.

Bióloga, mestre em Ciências Florestais pela Universidade Federal de Lavras e, atualmente, doutoranda em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos, no Departamento de Botânica, onde desenvolve pesquisas sobre o potencial alelopático de espécies de plantas ocorrentes no Bioma Cerrado que possam resultar em compostos bioativos para o controle de espécies infestantes de sistemas agrícolas.

Publicado
2015-10-01
Como Citar
Anese, S., Gualtieri, S. C. J., Grisi, P. U., Jatobá, L. de J., & Arduin, M. (2015). <b>Phytotoxic potential of <i>Drimys brasiliensis</i&gt; Miers for use in weed control. Acta Scientiarum. Agronomy, 37(4), 505-516. https://doi.org/10.4025/actasciagron.v37i4.19476
Seção
Produção Vegetal

 

2.0
2019CiteScore
 
 
60th percentile
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2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus