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Interspecific hybridization among hieracium species in new zealand: evidence from flow.
| Content Provider | CiteSeerX |
|---|---|
| Author | Morgan-Richards, M. Trewick, Sa Chapman, Hm Krahulcova, A. |
| Abstract | Hieracium pilosella (Asteraceae) was accidentally introduced to New Zealand about 100 years ago. Since then it has become an aggressive weed, and an unexpected degree of genetic and genome size variation has been detected; features that might result from interspecies hybridization. We investigated the possibility that H. pilosella has hybridized with related taxa. Of the four other subgenus Pilosella species introduced to New Zealand, H. praealtum is the most abundant and, on morphological and distributional evidence, most likely to be the other parent. Flow cytometry was used to estimate relative genome size for 156 Hieracium plants collected from the wild. Plants assigned to either parental or hybrid morpho-types were found to comprise tetraploid and pentaploid individuals using genome size measurements, and this was |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | New Zealand Hieracium Specie Interspecific Hybridization Interspecies Hybridization Relative Genome Size Distributional Evidence Related Taxon Genome Size Variation Pentaploid Individual Flow Cytometry Unexpected Degree Genome Size Measurement Hieracium Plant Hybrid Morpho-types Aggressive Weed Subgenus Pilosella Specie Hieracium Pilosella |
| Content Type | Text |
