SciELO - Scientific Electronic Library Online

vol.13 número3In vitro conservation and rooting of "infalível" (Mandevilla velutina K. Schum.), a medicinal plant of CerradoAntifungal activity of Momordica charantia L. extracts against Colletotrichum musae índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista Brasileira de Plantas Medicinais

versión impresa ISSN 1516-0572


ALVES, L.L. et al. Allelopathic activity of aqueous extracts of medicinal plants on the germination of Lactuca sativa L. and Bidens pilosa L.. Rev. bras. plantas med. [online]. 2011, vol.13, n.3, pp. 328-336. ISSN 1516-0572.

The allelopathic potential of four different extracts of medicinal plants (Eclipta alba, Gomphrena globosa, Tabernaemontana catharinensis and Tithonia diversifolia) was evaluated on the germination of Bidens pilosa and Lactuca sativa. The results obtained in the germination test indicated a greater inhibitory activity of G. globosa extract on Bidens pilosa and Lactuca sativa seeds and seedlings, regardlessof the used concentration, and an increase in the inhibitory activity of T. catharinensis and T. diversifolia extracts with an increase in their concentrations. As to Germination Speed Index, the data demonstrated a reduction due to the high mortality of seedlings subjected to G. globosa and T. catharinensis extracts and a late germination of seeds subjected to T. diversifolia extracts. As to the vigor of seeds, the smallest survival percentages occur at 2.5% for B. pilosa and at 10% for L.sativa.

Palabras clave : allelopathy; Eclipta alba; Gomphrena globosa; Tabernaemontana catharinensis; Tithonia diversifolia.

        · resumen en Portugués     · texto en Portugués     · pdf en Portuguéspdf en Portugués