IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Germination inhibitory activity of aqueous extracts of native grasses from South America
Autor/es:
LIDIA R. SCRIVANTI; ANA M. ANTON
Revista:
RODRIGUESIA
Editorial:
Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
Referencias:
Año: 2021 vol. 72
ISSN:
0370-6583
Resumen:
Soluble allelochemicals have generated great interest since they can be used for the biologicalcontrol of pests, especially of weeds. However, few studies have evaluated the effectiveness ofsoluble compounds of exudates on germination in relation to exposure time. Here we evaluate theinhibitory effect of aqueous root, stem and leaf extracts of five South American species ofBothriochloa on the percentage of seed germination of four target species (lettuce, lovegrass, maizeand wintergreen paspalum) over three exposure periods (48, 120 and 168 h). Aqueous extracts ofthe five Bothriochloa species inhibited germination; germination inhibition was strongly correlatedwith treatment exposure time, with the longest treatment period (168 h) being the one of greatestinhibitory activity. Inhibitory activity differed among types of aqueous extracts. The suitablemanagement of allelopathy might improve crop productivity and environmental protection throughbiologically friendly control of weeds