Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/50021
Título: Allozyme variation and structure of the Canarian endemic palm tree Phoenix canariensis (Arecaceae): Implications for conservation
Autores/as: González Pérez,Miguel Ángel 
Caujapé-Castells, J.
Sosa, PA 
Clasificación UNESCO: 241714 Genética vegetal
Palabras clave: Allozymes
Canary Islands
Conservation genetics
Genetic differentiation
Hybrids, et al.
Fecha de publicación: 2004
Editor/a: 0018-067X
Publicación seriada: Heredity 
Resumen: Electrophoretic analysis of 18 allozyme loci was used to estimate the levels and structuring of genetic variation within and among natural populations of the protected endemic palm species from the Canary Islands (Phoenix canariensis) to evaluate its genetic relationship with the widespread congener P. dactylifera, and to assess comparatively the genetic variation in the populations where the two species coexist with morphologically intermediate plants (mixed populations). Our survey revealed that the within-population component explains roughly 75% of the genetic variation levels detected in P. canariensis (A=1.59; P=41.8; He=0.158), which rank higher than those reported for other species of the Arecaceae. A Principal Component analysis (PCA) based on allele frequencies consistently separates populations of P. canariensis and P. dactylifera, and reveals a close genetic relationship between P. canariensis and the mixed populations. Reduced levels of genetic variation in P. canariensis with respect to P. dactylifera, the fact that the genetic makeup of the Canarian endemic (with no unique alleles) is a subset of that found in P. dactylifera, and the high genetic identity between both species strongly suggest that P. canariensis is recently derived from a common ancestor closely related to P. dactylifera.
URI: http://hdl.handle.net/10553/50021
ISSN: 0018-067X
DOI: 10.1038/sj.hdy.6800507
Fuente: Heredity [ISSN 0018-067X], v. 93 (3), p. 307-315
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