Abstract:
:Genetic diversity and its partition within and among populations and families of two species of Antirrhinum L., A. charidemi Lange and A. valentinum F.Q., have been studied. Both species are narrow-range endemics, self-incompatible, ecologically specialized and form small isolated populations. Despite these similarities, the species differ markedly in the distribution of genetic diversity. In A. valentinum, 61.64% of the total variation was distributed among populations, whereas in A. charidemi it was only 8.55%. A. charidemi showed little population divergence (GST = 0.0542) relative to A. valentinum (GST = 0.4805). In neither species was within-population genetic diversity correlated with population size, nor were there significant correlations between genetic and geographical distances. These results are discussed in relation to differences in flowering time and habitat continuity. They suggest that caution should be taken when making generalizations about levels of genetic variation and patterns of plant reproduction, life history and geographical distribution.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Mateu-Andrés I,Segarra-Moragues JGdoi
10.1046/j.1365-294x.2000.01119.xsubject
Has Abstractpub_date
2000-12-01 00:00:00pages
2081-7issue
12eissn
0962-1083issn
1365-294Xpii
mec1119journal_volume
9pub_type
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