NDLI: Allozyme diversity in natural populations of Viola palmensis Webb & Berth. (Violaceae) from La Palma (Canary Islands): implications for conservation genetics.

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Allozyme diversity in natural populations of Viola palmensis Webb & Berth. (Violaceae) from La Palma (Canary Islands): implications for conservation genetics.

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Allozyme diversity in natural populations of Viola palmensis Webb & Berth. (Violaceae) from La Palma (Canary Islands): implications for conservation genetics.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Batista, Francisco Sosa, Pedro A.
Spatial Coverage	Spain
Description	Country affiliation: Spain Author Affiliation: Batista F ( Departamento de Biología, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017 Las Palmas, Canary Islands, Spain.)
Abstract	Genetic diversity was measured by allozyme electrophoresis in eight natural populations of the threatened Canarian endemic Viola palmensis Webb & Berth. (Violaceae). Nineteen alleles corresponding to 11 gene loci were detected. High levels of genetic diversity were found, ranging from 36.3 to 45.4 % for the percentage of polymorphic loci (P), from 1.45 to 1.60 for the average number of alleles per locus (A) and from 0.128 to 0.200 for the expected heterozygosity (H(e)). Between 85.5 and 96.6 % of genetic variability was apportioned within populations. As a whole, populations were not at Hardy-Weinberg equilibrium, with a deficit of heterozygous individuals attributable to the existence of genetic structuring in the populations analysed. The levels of interpopulation genetic differentiation were low (mean F(ST) = 0.100), while genetic identity pair-wise comparisons were high (mean I = 0.973) suggesting considerable levels of gene flow among populations. No relationship was detected between genetic differentiation and geographical distances between populations. An outcrossing insect-mediated breeding system might contribute to pollen dispersion of this species. For conservation genetics we suggest in situ preservation areas are defined that are free of disturbance and that include populations with the highest genetic diversity.
File Format	HTM / HTML
ISSN	03057364
e-ISSN	10958290
Journal	Annals of Botany
Issue Number	6
Volume Number	90
Language	English
Publisher	Oxford University Press
Publisher Date	2002-12-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Geography Enzymes Research Support, Non-u.s. Gov't Discipline Botany Ecology Metabolism Spain Electrophoresis, Starch Gel Genetic Variation Alleles Genetics Heterozygote Viola Enzymology Conservation Of Natural Resources
Content Type	Text
Resource Type	Article
Subject	Plant Science

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Allozyme diversity in natural populations of Viola palmensis Webb & Berth. (Violaceae) from La Palma (Canary Islands): implications for conservation genetics.