Fecha/hora: 01/06/2024 23:16:23

Biblioteca(s): | INIA La Estanzuela; INIA Las Brujas.
Tipo de la producción científica: | Artículos en Revistas Indexadas Internacionales
Circulación/Nivel: | B - 1
Fecha corriente: | 21/02/2014
Fecha de la última actualización: | 18/03/2022
Autoria: | IBÁÑEZ, F.; ZOPPOLO, R.
Afiliación: | FACUNDO IBÁÑEZ SILVA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROBERTO JOSE ZOPPOLO GOLDSCHMIDT, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.
Título: | Assessment of allelopathic properties of Baccharis dracunculifolia DC in laboratory and field conditions.
Año de publicación: | 2011
Fuente/Imprenta: | Allelopathy Journal, 2011, v.28, no. 1, p.77-86.
Descripción Física: | 2-s2.0-80052850810
ISSN: | 0971-4693

Idioma:

Español
Inglés

Notas: | Article history: Received in revised form: April 16, 2011.

Contenido:

ABSTRACT.

In plantations of B. dracunculifolia, a noticeable decrease in diversity and development of monocots species was observed. Hence, phytotoxic studies were done to determine the in vitro toxicity of essential oils of B. dracunculifolia on monocot (Lolium multiflorum) and dicot (Lactuca sativa). The essential oil at concentration of 1000 mg/L drastically decreased the hypocotyl growth of L. multiflorum (90%) and L. sativa (60%). The analysis of essential oil by gas chromatography showed a high percentage of compounds with phytotoxic effects, such as limonene, &#945; and &#946;-pinene. The field experiments showed that the inhibition under B. dracunculifolia was not due to the effect of shading nor to nutrient competition. The reduction in germination of L. multiflorum under B. dracunculifolia was > 90%. In the soil under the plantation, a high concentration of phenolics was measured (15mg/100g of soil). These results indicate that allelopathic activity of B. dracunculifolia may be explained through a combination of phytotoxic effects (emission of volatile compounds and the accumulation of phenolics in the soil profile).

Thesagro: | ACEITES ESENCIALES; ALELOPATÍA; FITOTOXICIDAD; LACTUCA SATIVA.

Categoría del tema:

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F30 Genética vegetal y fitomejoramiento

Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (12807-1) - PXI - AP - DD - PP/ALLELOPATHY JR/2011 -  -  - DIS