Abstract:
:The genus Epipactis contains a problematical complex of autogamous taxa among which species limits are difficult to define. Different authors have treated these plants in different ways, some recognizing the different taxa as distinct species, others considering them as minor intraspecific variants. These contrasting treatments have a direct impact on the conservation resources and status such plants command; 'endemic orchid species' are perceived as having high conservation value, 'localized minor variants' are not. We used allozyme and chloroplast restriction fragment length polymorphism (RFLP) and sequencing analyses to investigate patterns of population genetic structure underlying the taxonomic complexity in this group. Populations of E. dunensis, E. leptochila and E. muelleri were homozygous and uniform for all loci studied here. There were, however, fixed genetic differences among these taxa. Comparisons with published data from the putative progenitor species for the autogamous taxa (the widespread, allogamous E. helleborine) suggest iterative origins of autogamy, rather than the self-pollinating taxa all being merely mutational variants of a single autogamous lineage.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Squirrell J,Hollingsworth PM,Bateman RM,Tebbitt MC,Hollingsworth MLdoi
10.1046/j.1365-294x.2002.01610.xsubject
Has Abstractpub_date
2002-10-01 00:00:00pages
1957-64issue
10eissn
0962-1083issn
1365-294Xpii
1610journal_volume
11pub_type
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