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Träfflista för sökning "WFRF:(Fay M. W.) srt2:(2000-2004)"

Sökning: WFRF:(Fay M. W.) > (2000-2004)

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1.
  • Savolainen, Vincent, et al. (författare)
  • Phylogeny of the eudicots : a nearly complete familial analysis based on rbcL gene sequences
  • 2000
  • Ingår i: Kew bulletin. - 0075-5974 .- 1874-933X. ; 55:2, s. 257-309
  • Tidskriftsartikel (refereegranskat)abstract
    • A phylogenetic analysis of 589 plastid rbcL gene sequences representing nearly all eudicot families (a total of 308 families; seven photosynthetic and four parasitic families are missing) was performed, and bootstrap re-sampling was used to assess support for clades. Based on these data, the ordinal classification of eudicots is revised following the previous classification of angiosperms by the Angiosperm Phylogeny Group (APG). Putative additional orders are discussed (e.g. Dilleniales, Escalloniales, Vitales), and several additional families are assigned to orders for future updates of the APG classification. The use of rbcL alone in such a large matrix was found to be practical in discovering and providing bootstrap support for most orders. Combination of these data with other matrices for the rest of the angiosperms should provide the framework for a complete phylogeny to be used in macro-evolutionary studies.
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3.
  • Hedrén, Mikael, et al. (författare)
  • Amplified fragment length polymorphisms (AFLP) reveal details of polyploid evolution in Dactylorhiza (Orchidaceae)
  • 2001
  • Ingår i: American Journal of Botany. - 0002-9122. ; 88:10, s. 1868-1880
  • Tidskriftsartikel (refereegranskat)abstract
    • The utility of the PCR-based AFLP technique (polymerase chain reactions amplified fragment length polymorphisms) was explored in elucidating details of polyploid evolution in the Eurasian orchid genus Dactylorhiza. We emphasized Swedish taxa but also included some material from the British Isles and elsewhere in Europe. Three different sets of primers, amplifying different subsets of restriction fragments, independently revealed similar patterns for relationships among the Dactylorhiza samples investigated. The AFLP data support the general picture of polyploid evolution in Dactylorhiza, i.e., that allotetraploid derivatives have arisen repeatedly as a result of hybridization beween the two parental groups D. incarnata s.l. (sensu lato; diploid marsh orchids) and the D. maculata group (spotted orchids), Within the incarnata s.l. group. morphologically defined varieties were interdigitated. The D. maculata group consisted of two distinct subgroups, one containing autotetraploid D. maculata subsp. maculata and the other containing diploid D. maculata subsp. fuchsii. Allotetraploids showed a high degree of additivity for the putative parental genomes, and relationships among them were partly correlated to morphologically based entities. but also to geographic distribution. Thus, allotetraploid taxa from the British Isles clustered together, rather than with morphologically similar plants from other areas.
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