Sequence data from a portion of the external transcribed spacer (ETS) and from the internal transcribed spacers (ITS1 and ITS2) of 18S-26S nuclear ribosomal DNA were used together with chloroplast DNA PCR-RFLP data to unravel patterns of allotetraploid speciation within the Western European Dactylorhiza polyploid complex. A maximum likelihood tree based on combined ETS and ITS sequences suggests that the Western European Dactylorhiza allotetraploids have evolved by hybridization between four main diploid lineages. Cloned sequences and the topology of the ITS plus ETS tree indicate that the allotetraploid species D. elata, D. brennensis, and D. sphagnicola have originated from the autotetraploid D. maculata together with the diploid D. incar...
Abstract Background Hybridization and polyploidy are potent forces that have regularly stimulated pl...
The aim of this thesis was to investigate and describe different aspects of variation in the Dactylo...
The hybrid origin of the western Mediterranean orchid Dactylorhiza insularis was demonstrated by gen...
To obtain further information on the polyploid dynamics of the the Dactylorhiza incarnata/maculata p...
Dactylorhiza brennensis is an allotetraploid member of the Dactylorhiza majalis s.lat. complex, whic...
Disentangling phylogenetic relationships proves challenging for groups that have evolved recently, e...
The utility of the PCR-based AFLP technique (polymerase chain reactions amplified fragment length po...
Disentangling phylogenetic relationships proves challenging for groups that have evolved recently, e...
Most of the Scandinavian members of the orchid genus Dactylorhiza are included in the D. incarnata/D...
The Dactylorhiza incarnata/maculata complex (Orchidaceae) was used as a model system to understand g...
This thesis examines genetic variation in allotetraploids of the Dactylorhiza incarnata/maculata pol...
A number of hybrid species has been recently detected in orchids of the genus Dacylorhiza, by the us...
Taxonomic complexity may be associated with migration history and polyploidy. We used plastid and nu...
Sequences of both internal and external transcribed spacers of nuclear ribosomal DNA were sequenced ...
A tall allotetraploid member of the Dactylorhiza incarnata/maculata complex with unspotted leaves an...
Abstract Background Hybridization and polyploidy are potent forces that have regularly stimulated pl...
The aim of this thesis was to investigate and describe different aspects of variation in the Dactylo...
The hybrid origin of the western Mediterranean orchid Dactylorhiza insularis was demonstrated by gen...
To obtain further information on the polyploid dynamics of the the Dactylorhiza incarnata/maculata p...
Dactylorhiza brennensis is an allotetraploid member of the Dactylorhiza majalis s.lat. complex, whic...
Disentangling phylogenetic relationships proves challenging for groups that have evolved recently, e...
The utility of the PCR-based AFLP technique (polymerase chain reactions amplified fragment length po...
Disentangling phylogenetic relationships proves challenging for groups that have evolved recently, e...
Most of the Scandinavian members of the orchid genus Dactylorhiza are included in the D. incarnata/D...
The Dactylorhiza incarnata/maculata complex (Orchidaceae) was used as a model system to understand g...
This thesis examines genetic variation in allotetraploids of the Dactylorhiza incarnata/maculata pol...
A number of hybrid species has been recently detected in orchids of the genus Dacylorhiza, by the us...
Taxonomic complexity may be associated with migration history and polyploidy. We used plastid and nu...
Sequences of both internal and external transcribed spacers of nuclear ribosomal DNA were sequenced ...
A tall allotetraploid member of the Dactylorhiza incarnata/maculata complex with unspotted leaves an...
Abstract Background Hybridization and polyploidy are potent forces that have regularly stimulated pl...
The aim of this thesis was to investigate and describe different aspects of variation in the Dactylo...
The hybrid origin of the western Mediterranean orchid Dactylorhiza insularis was demonstrated by gen...