IJAER

International Journal of Agriculture and Environmental Research™

ISSN 2455-6939

Title:
BIOASSAY TO EVALUATE THE ALLELOPATHIC POTENTIAL OF LEAVES of Siparuna guianensis MART. & ZUCC.

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.

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