Examining morphological and molecular diagnostic character states of Cichorium intybus L. (Asteraceae) and C. spinosum L

The inter- and intraspecific variability of Cichorium intybus L. was examined to evaluate potential morphological and molecular diagnostic character states. Two diagnostic and one overlapping morphological character clearly delimit the two species C. intybus and C. spinosum. All applied molecular me...

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Bibliographic Details
Published in:Plant systematics and evolution 2005-06, Vol.253 (1/4), p.105-123
Main Authors: Bachman, K., Gemeinholzer, B., Bachmann, K.
Format: Article
Language:English
Subjects:
Amplified fragment length polymorphism
Biological taxonomies
Cichorium intybus
Diagnostic systems
Environmental factors
Genetic loci
Genetic screening
Genetic variation
Geography
Microsatellites
Morphology
Mutation
Phylogenetics
Plants
Polymerase chain reaction
Species
Taxa
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Summary:The inter- and intraspecific variability of Cichorium intybus L. was examined to evaluate potential morphological and molecular diagnostic character states. Two diagnostic and one overlapping morphological character clearly delimit the two species C. intybus and C. spinosum. All applied molecular methods (ITS, AFLP, Microsatellites) failed to significantly discriminate between these accepted species. As the morphological traits are fixed and heritable, criteria for species delimitation are fulfilled. These traits, however, are apparently due to mutations of a few crucial loci affecting the morphological diagnostic character states. Intraspecific variability within C. intybus revealed to be highly influenced by plastic response to local environmental factors and subspecific delimitation cannot be supported.
ISSN:0378-2697
1615-6110
2199-6881
DOI:10.1007/s00606-004-0272-6