Evoluce, hybridizace a klonální distribuce apo- a amfimiktických druhů rodu Hieracium subgen. Pilosella (Asteraceae, Lactuceae) ve středoevropských pohořích

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F05%3A00030447" target="_blank" >RIV/67985939:_____/05:00030447 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evolution, hybridisation, and clonal distribution of apo- and amphimictic species of Hieracium subgen. Pilosella (Asteraceae, Lactuceae) in a Central European mountain range

Popis výsledku v původním jazyce

Hieracium subgenus Pilosella is an extremely difficult group taxonomically, as it combines apomixis with extensive hybridisation. The study presents a multidisciplinary approach combining DNA fingerprinting and the analysis of chloroplast DNA with morphological-taxonomic studies, cultivation, experimental hybridisation, analysis of ploidy level and mode of reproduction. Several species of a hybridogenous complex were studied in detail at clone, population and species level. Different levels of variability were found in apomictic species that were related to different ages: from near uniformity to variability within the locality. Chloroplast haplotypes formed two major groups and often indicated unidirectional transmission of cpDNA, despite multiple origins of most apomicts. Moreover, often the facultative apomict rather than the sexual species acted as seed parent. Thus, the residual sexuality of the apomicts plays a larger role in the speciation of this group than assumed.

Název v anglickém jazyce

Evolution, hybridisation, and clonal distribution of apo- and amphimictic species of Hieracium subgen. Pilosella (Asteraceae, Lactuceae) in a Central European mountain range

Popis výsledku anglicky

Hieracium subgenus Pilosella is an extremely difficult group taxonomically, as it combines apomixis with extensive hybridisation. The study presents a multidisciplinary approach combining DNA fingerprinting and the analysis of chloroplast DNA with morphological-taxonomic studies, cultivation, experimental hybridisation, analysis of ploidy level and mode of reproduction. Several species of a hybridogenous complex were studied in detail at clone, population and species level. Different levels of variability were found in apomictic species that were related to different ages: from near uniformity to variability within the locality. Chloroplast haplotypes formed two major groups and often indicated unidirectional transmission of cpDNA, despite multiple origins of most apomicts. Moreover, often the facultative apomict rather than the sexual species acted as seed parent. Thus, the residual sexuality of the apomicts plays a larger role in the speciation of this group than assumed.

Druh

C - Kapitola v odborné knize

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

<a href="/cs/project/IAA6005203" target="_blank" >IAA6005203: Vliv ekologických faktorů na genetickou strukturu mladého agamického komplexu: Hieracium subgen. Pilosella</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Plant species-level systematics: new perspectives on pattern & process

ISBN

3-906166-39-2

Počet stran výsledku

27

Strana od-do

175-201

Počet stran knihy

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Název nakladatele

Koeltz

Místo vydání

Königstein

Kód UT WoS kapitoly

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