Potencial alelopatico de los lixiviados acuosos y los extractos orgánicos de Artemisia absinthium (Asteracea)
DOI:
https://doi.org/10.17533/udea.vitae.425Keywords:
aleloquìmicos, Artemisia absinthium, Echinochloa colonum, fitotoxicidad, frecuencia mitòtica, allelochemicals, phytotoxicity, mitotic frecuencyAbstract
Los cultivadores de arroz en el Tolima (Colombia), han tenido que afrontar dificultades debido a que el cultivo es altamente atacado por la presencia de plantas invasoras (arvenses). Dado que las especies del género Artemisia reciben creciente atención de los investigadores debido a la diversidad biológica y química de sus constituyentes, es interesante estudiar su potencial como inhibidores del desarrollo vegetativo de la gramínea considerada como una de las especies que mayor daño ocasiona al cereal. El potencial alelopático de los lixiviados acuosos y los extractos orgánicos de Artemisia absinthium sobre la germinación y el desarrollo radicular de Echinochloa colonum (liendre puerco) ha sido evaluado. La velocidad de germinación de E. colonum guarda relación directa con la concentración de los lixiviados acuosos y de los extractos orgánicos; las fracciones etanólica y diclorometánica impiden la frecuencia mitótica en proporción directa a su concentración. Es muy pobre el efecto inhibitorio de los lixiviados sobre la frecuencia mitótica. La mezcla etanol-agua 95:5 muestra el mayor efecto alelopático. Los resultados confirman el potencial alelopático de A. absinthiumDownloads
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