About: A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria

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About: A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A population of Centaurea weldeniana was discovered recently near Wien (Vienna). The species is reported from Austria for the first time. Determination is confirmed by morphometric analysis of Central European and additional Balkan material of the C. jacea agg. and karyological data. All sampled populations of C. weldeniana are diploid, while only tetraploids have been reported from Central Europe within the C. jacea agg. so far. Detailed morphometric analysis of the newly discovered C. weldeniana population revealed several hybrids with tetraploid C. jacea. The hybrids are tetraploid and originate from unreduced gametes of diploids. No triploids were found. Indeed, the incidence of hybridization is surprisingly low. The population was probably discovered already in 1886 (determined as C. bracteata) and was described as a new species C. argyrolepis in 1901, but these data were lost. However, this isolated diploid population has survived for at least 125 years, which provides a good example of the strength of inter-cytotype reproductive barriers in Centaurea sect. Jacea. A population of Centaurea weldeniana was discovered recently near Wien (Vienna). The species is reported from Austria for the first time. Determination is confirmed by morphometric analysis of Central European and additional Balkan material of the C. jacea agg. and karyological data. All sampled populations of C. weldeniana are diploid, while only tetraploids have been reported from Central Europe within the C. jacea agg. so far. Detailed morphometric analysis of the newly discovered C. weldeniana population revealed several hybrids with tetraploid C. jacea. The hybrids are tetraploid and originate from unreduced gametes of diploids. No triploids were found. Indeed, the incidence of hybridization is surprisingly low. The population was probably discovered already in 1886 (determined as C. bracteata) and was described as a new species C. argyrolepis in 1901, but these data were lost. However, this isolated diploid population has survived for at least 125 years, which provides a good example of the strength of inter-cytotype reproductive barriers in Centaurea sect. Jacea. (en)
Title	A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria (en)
skos:prefLabel	A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria A diploid drop in the tetraploid ocean: hybridization and long-term survival of a singular population of Centaurea weldeniana Rchb. (Asteraceae), a taxon new to Austria (en)
skos:notation	RIV/60076658:12310/12:43883390!RIV13-MSM-12310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/08/1126), Z(MSM6007665801)
http://linked.open...iv/cisloPeriodika	7
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Koutecký, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Jihočeská univerzita v Českých Budějovicích / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	120170
http://linked.open...ai/riv/idVysledku	RIV/60076658:12310/12:43883390
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Polyploidy; Hybridization; Flow cytometry; Genome size; Chromosome number; Centaurea sect. Jacea; BARRIERS; DIFFERENTIATION; JACEA; GENOME SIZE; CENTRAL-EUROPE (en)
http://linked.open.../riv/klicoveSlovo	BARRIERS CENTRAL-EUROPE Centaurea sect. Jacea Chromosome number GENOME SIZE Genome size JACEA Hybridization DIFFERENTIATION Flow cytometry Polyploidy
http://linked.open...odStatuVydavatele	AT - Rakouská republika
http://linked.open...ontrolniKodProRIV	[07F41D2D1338]
http://linked.open...i/riv/nazevZdroje	PLANT SYSTEMATICS AND EVOLUTION
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Hybridization between ploidy levels and the role of unreduced gametes in polyploid complex Centaurea sect. Jacea (Knapweeds)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	298
http://linked.open...iv/tvurceVysledku	Koutecký, Petr
http://linked.open...ain/vavai/riv/wos	000306954700013
http://linked.open...n/vavai/riv/zamer	EKOLOGICKÉ, EVOLUČNÍ A EXPERIMENTÁLNĚ BIOLOGICKÉ PŘÍSTUPY KE STUDIU VZNIKU A VÝZNAMU BIODIVERZITY
issn	0378-2697
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s00606-012-0641-5
http://localhost/t...ganizacniJednotka	12310

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