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Molecular diversity and derivations of populations of Silene acaulis and Saxifraga oppositifolia from the high Arctic and more southerly latitudes
A survey of allozyme diversity within and between populations of Silene acaulis from Spitsbergen, Norway, Iceland and Scotland, showed that populations from the high Arctic (Spitsbergen, > 76°N)Expand
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Genetic structure and colonizing success of a clonal, weedy species, Pilosella officinarum (Asteraceae)
Introduced populations of weeds which are polyploid and reproduce primarily by apomixis are generally considered as having low levels of population genetic variation, highly differentiatedExpand
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Variation inHieracium subgen.Pilosella (Asteraceae): What do we know about its sources?
The present paper reviews mechanisms producing complicated patterns of variation withinHieracium subgen.Pilosella. The taxonomic complexity of this subgenus is due to highly variable basic speciesExpand
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Reproductive strategy and population variability in the facultative apomict Hieracium pilosella (Asteraceae).
Molecular studies of apomictic plant species often detect more genotypic variation than predicted from their assumed reproductive mode. The two most commonly invoked mechanisms to explain these highExpand
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Sexual reproduction in field populations of the facultative apomict, Hieracium pilosella
Abstract Hand pollination under New Zealand field conditions of capitula from each of six populations of Hieracium pilosella (maternal parent) with the closely related but morphologically distinct H.Expand
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Chloroplast DNA diversity of Hieracium Pilosella (Asteraceae) introduced to New Zealand: reticulation, hybridization, and invasion.
The European hawkweed Hieracium pilosella is a successful invader and a troublesome weed in New Zealand. The systematics of the genus Hieracium is extremely complex and contentious, probably due toExpand
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Andromonoecy and high fruit abortion in Anthonotha noldeae in a West African montane forest
Anthonotha noldeae (Rossberg) Exell et Hillc. Leguminosae, Caesalpinioideae, an Afromontane forest canopy tree, produces a superabundance of flowers, but few (1.1%) initiate fruits, and even fewerExpand
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Interspecific hybridization among Hieracium species in New Zealand: evidence from flow cytometry
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 sizeExpand
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A review of genetic analyses of hybridisation in New Zealand
Abstract Hybridisation between related taxa has a range of possible biological consequences, ranging from the production of sterile offspring, through introgression of alleles into populations, toExpand
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