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Genome size variation and evolution of Hieracium L.
dc.contributor.advisorChrtek, Jindřich
dc.creatorZahradníček, Jaroslav
dc.date.accessioned2017-04-10T14:28:19Z
dc.date.available2017-04-10T14:28:19Z
dc.date.issued2008
dc.identifier.urihttp://hdl.handle.net/20.500.11956/5483
dc.description.abstractIn this study, 43 "main" species (Zahn) of the subgenus Hieracium and 3 species of the subgenus Chionoracium were studied karyologically and cytometrically. Triploid cyto- types predominate in the whole of Europe. Diploid cytotypes are mainly concentrated in specific areas of presumed glacial refugia in southern Europe. Chromosome counts of plants from the subgenus Chionoracium are congruent with all values published so far. The measured monoploid genome size in subgen. Hieracium correlated with the concurrently produced molecular phylogeny (ETS), which also separated two main lineages of species that correspond to their geographic distribution. Both these lineages differed significantly in genome size (Cx). On average, members of the "eastern" group had over 1 pg more DNA members of the "western" group. Some of the "main" species were marked as hybridogeneous/hybrid between the two lineages by ETS markers. The genome size of these hybridogeneous species was surprisingly higher than the average genome size of both main lineages. Intraspecies variability in genome size was found in seven species. It has been explained by the presence of populations of hybridogeneous origin, multiple polyploidization events and, in one species, turned out to be a methodical artifact. Both subgenera under study markedly...en_US
dc.languageČeštinacs_CZ
dc.language.isocs_CZ
dc.publisherUniverzita Karlova, Přírodovědecká fakultacs_CZ
dc.titleVelikost genomu a evoluční trendy rodu Hieracium L.cs_CZ
dc.typediplomová prácecs_CZ
dcterms.created2008
dcterms.dateAccepted2008-05-23
dc.description.departmentDepartment of Botanyen_US
dc.description.departmentKatedra botanikycs_CZ
dc.description.facultyPřírodovědecká fakultacs_CZ
dc.description.facultyFaculty of Scienceen_US
dc.identifier.repId56802
dc.title.translatedGenome size variation and evolution of Hieracium L.en_US
dc.contributor.refereeSuda, Jan
dc.identifier.aleph000967825
thesis.degree.nameMgr.
thesis.degree.levelmagisterskécs_CZ
thesis.degree.disciplineBiologyen_US
thesis.degree.disciplineBiologiecs_CZ
thesis.degree.programBiologiecs_CZ
thesis.degree.programBiologyen_US
uk.faculty-name.csPřírodovědecká fakultacs_CZ
uk.faculty-name.enFaculty of Scienceen_US
uk.faculty-abbr.csPřFcs_CZ
uk.degree-discipline.csBiologiecs_CZ
uk.degree-discipline.enBiologyen_US
uk.degree-program.csBiologiecs_CZ
uk.degree-program.enBiologyen_US
thesis.grade.csVýborněcs_CZ
thesis.grade.enExcellenten_US
uk.abstract.enIn this study, 43 "main" species (Zahn) of the subgenus Hieracium and 3 species of the subgenus Chionoracium were studied karyologically and cytometrically. Triploid cyto- types predominate in the whole of Europe. Diploid cytotypes are mainly concentrated in specific areas of presumed glacial refugia in southern Europe. Chromosome counts of plants from the subgenus Chionoracium are congruent with all values published so far. The measured monoploid genome size in subgen. Hieracium correlated with the concurrently produced molecular phylogeny (ETS), which also separated two main lineages of species that correspond to their geographic distribution. Both these lineages differed significantly in genome size (Cx). On average, members of the "eastern" group had over 1 pg more DNA members of the "western" group. Some of the "main" species were marked as hybridogeneous/hybrid between the two lineages by ETS markers. The genome size of these hybridogeneous species was surprisingly higher than the average genome size of both main lineages. Intraspecies variability in genome size was found in seven species. It has been explained by the presence of populations of hybridogeneous origin, multiple polyploidization events and, in one species, turned out to be a methodical artifact. Both subgenera under study markedly...en_US
uk.publication-placePrahacs_CZ
uk.grantorUniverzita Karlova, Přírodovědecká fakulta, Katedra botanikycs_CZ


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