Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/53680
Título: Genetic variability and differentiation of sporophytes and gametophytes in populations of Gelidium arbuscula (Gelidiaceae: Rhodophyta) determined by isozyme electrophoresis
Autores/as: Sosa, P. A. 
García-Reina, G. 
Clasificación UNESCO: 241719 Fisiología vegetal
241707 Algología (ficología)
241714 Genética vegetal
Palabras clave: Allelic Frequency
Genetic Structure
Genetic Differentiation
Gene Diversity
Genetic Variability
Fecha de publicación: 1992
Publicación seriada: Marine Biology 
Resumen: Genetic differentiation and genetic variability of sporophytic and gametophytic populations of Gelidium arbuscula (Bory) from three localities sampled in 1989 and 1990 in the Canary Islands (Spain) were examined by isozyme electrophoresis. Twenty-three to 29 putative alleles corresponding to 22 gene loci, were compared. High deviations in Hardy-Weinberg equilibrium, and significant differences between allelic frequencies of sporophytic and gametophytic subpopulations at the same locality were found, suggesting a predominant asexual reproduction of G. arbuscula. The genetic variability (percentage of polymorphic loci, mean number of alleles per locus and average gene diversity) of haploid subpopulations was lower than that of diploid subpopulations at all three localities, being the lowest described for seaweeds. No correlation between genetic and geographical distance was found. The high genetic differentiation coefficient between all subpopulations suggests a very reduced genetic flow between subpopulations of the same and of different localities. These results suggest that the genetic structure of the populations of G. arbuscula from the Canary Islands is due to a founder-effect combined with a predominance of asexual reproduction. This is the first report comparing allelic frequencies between sporophytic and gametophytic subpopulations of seaweeds.
URI: http://hdl.handle.net/10553/53680
ISSN: 0025-3162
DOI: 10.1007/BF00349711
Fuente: Marine Biology [ISSN 0025-3162], v. 113 (4), p. 679-688, (Agosto 1992)
Colección:Artículos
Vista completa

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.