Publication: Variabilidad genética de Pinus nigra subsp. salzmannii en la Región de Murcia mediante microsatélites cloroplásticos
Authors
Jiménez Martínez, Juan Francisco ; Martínez, Juan Faustino ; Molins, Aranzazu ; Rosselló, Josep Antoni ; Sánchez Gómez, Pedro
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Facultad de Biología
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Publisher
Murcia: Universidad de Murcia, Servicio de Publicaciones
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DOI
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info:eu-repo/semantics/article
Description
Abstract
En el presente trabajo se han utilizado cinco microsatélites cloroplás-
ticos (cpSSR) para describir la diversidad genética intrapoblacional y
la diferenciación genética de Pinus nigra subsp. salzmannii de Murcia.
El modelo de alelos infinitos (IAM) ha sido el utilizado para el análisis
de la estructura genética y la distribución geográfica de la variación de
las poblaciones, tanto naturales como reforestadas. En términos ge-
nerales, las poblaciones muestreadas presentan una gran variación
genética intra e interpoblacional. Estos resultados pueden ser debidos
a un descenso dramático de las áreas de distribución, y a la fragmen-
tación de las poblaciones del Sureste ibérico desde el Holoceno. Ade-
más, los datos obtenidos indican un claro patrón geográfico de la dis-
tribución de la variación genética. Se sugiere que la población del Rin
cón de los Huertos podría haberse originado a partir de poblaciones
de distribución Bética, mientras que las poblaciones de Sierra Espuña
(repobladas) y El Carche podrían haberse originado a partir de pobla-
ciones de rango ibérico.
In this work five chloroplast simple sequence repeat markers (cpSSR) were used to describe the genetic variation of Pinus nigra subsp. salzmannii populations from SE Spain (Murcia province). The infinite allele model (IAM) was used to analyze the genetic structure of both natural and reforested populations, and to assess the geographical distribution of haplotypic variation. Overall, large levels of genetic variation whitin and between populations was detected. Genetic variation follow a clear geographic pattern. These results could be explained by a dramatic decline of its distribution and by the fragmentation of populations since Holocene times in Southeast Spain. It is suggested that the population from Rincon de los Huertos could have been originated from propagules from the Baetic range. In addition, populations from Sierra Espuña (reforested) and El Carche could have their origin from samples located on the Iberian range.
In this work five chloroplast simple sequence repeat markers (cpSSR) were used to describe the genetic variation of Pinus nigra subsp. salzmannii populations from SE Spain (Murcia province). The infinite allele model (IAM) was used to analyze the genetic structure of both natural and reforested populations, and to assess the geographical distribution of haplotypic variation. Overall, large levels of genetic variation whitin and between populations was detected. Genetic variation follow a clear geographic pattern. These results could be explained by a dramatic decline of its distribution and by the fragmentation of populations since Holocene times in Southeast Spain. It is suggested that the population from Rincon de los Huertos could have been originated from propagules from the Baetic range. In addition, populations from Sierra Espuña (reforested) and El Carche could have their origin from samples located on the Iberian range.
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Citation
Jiménez, J. F., Sánchez-Gómez, P., Martínez, J. F., Molins, A., & Rosselló, J. A. (2005). VARIABILIDAD GENÉTICA DE PINUS NIGRA SUBSP. SALZMANNII EN LA REGIÓN DE MURCIA MEDIANTE MICROSATÉLITES CLOROPLÁSTICOS. Anales De Biología, (27), 105–112.
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