Authors:
Vanessa Damasceno Goncalves
, Elisangela Clarete Camili
, Maria de Fatima Barbosa Coelho
,
Ludmila Silveira Piton
, Rodrigo Aleixo Brito de Azevedo
, Carla Maria Abido Valentini
|
Abstract:
Medicinal plants such as Siparuna guianensis, have secondary metabolites that may have
allelopathic properties with potential for use as natural herbicides. The aim of this study was to
evaluate the allelopathic potential of Siparuna guianensis leaves on the germination and growth
of Lactuca sativa L. The extract was obtained by 50 g leaves in 500 mL of distilled water in a
blender. From this extract was obtained by diluting in water in concentrations of 0 (control), 25,
50, 75 and 100%. The bioassay was conducted in completely randomized design with five
treatments and four replicates of 50 seeds of L. sativa. There was no significant difference
between the extracts for germination ranging from 97.5 to 100%. The germination rate and
seedling root length decreased proportionally with increasing concentration. The allelopathic
potential was verified in developmental characteristics of lettuce seedlings and there was no
effect on the germination percentage. |
