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Influencia de diversos factores edáficos en la distribución del género Xiphinema Cobb, 1913 (Nematoda: Dorylaimida) en la Región Central

Authors: Navas Izquierdo, Ana; Arias Fernández, Mª E.;

Influencia de diversos factores edáficos en la distribución del género Xiphinema Cobb, 1913 (Nematoda: Dorylaimida) en la Región Central

Abstract

[ES] Se estudia la influencia de la textura, pH, porcentaje de materia orgánica y tipo de suelo sobre la distribución de las especies del género Xiphinema en la cuenca baja del rio Alberche (Región Central); mediante el estudio de 275 muestras de suelo tomadas en áreas con diferente vegetación, suelo y clima. Se han encontrado en orden de frecuencia, las siguientes especies: X. pachtaicum (38,8%), X. diversicaudatum (6,2%), x: italiae (2,2%), X. coxi y X. sahelense (0,7%) y X. brevicolle, X. index y X. turcicum (0,4%). Se hace un análisis estadístico de X. pachtaicum y X. diversicaudatum, por ser las especies más frecuentes, encontrándose que la materia orgánica influye sobre las dos especies y la arcilla y el pH lo hacen sobre la presencia y abundancia de X. diversicaudatum. Se indican además las características de las muestras donde aparecen las restantes especies. Por último, se señala la importancia que, desde el puntó de vista agrobiológico, tiene el conocimiento de los factores limitantes para estos nematodos, puesto que de las ocho especies encontradas cuatro han sido confirmadas como transmisoras de virus.

[EN] The influence of texture, pH, percentage of organic matter and soil type on genus Xiphinema distribution on the low basin of Alberche river has been done, studying 275 soil samples from different vegetation, soil and climate. The Xiphinema species found were in order of frequency the following ones: X. pachtaicum (38,8%), X. diversicaudatum (6,2%), X. italiae (2,2%), X. coxi and X. sahelense (0,7%), X. brevicolle, X. index and X. turcicum (0,4%). The statistical analysis of X. pachtaicum and X. diversicaudatum in relation with the edaphic factors has been done, because they are the most frequent species appeared. Clay percentage and pH have influence on distribution and abundance of X. diversicaudatum and organic matter in both species. The edaphic characteristics of samples in which the other Xiphinema species were found are indicated. Finally, the interest of knowing restrictive factors in these species distribution is pointed out for the eight found species, four are known as virus transmitters.

11 Pag., 4 Tabl.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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