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Statements

Subject Item
n2:RIV%2F60076658%3A12310%2F12%3A43883390%21RIV13-MSM-12310___
rdf:type
skos:Concept n8:Vysledek
dcterms: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.
dcterms: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
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
skos:notation
RIV/60076658:12310/12:43883390!RIV13-MSM-12310___
n8:predkladatel
n10:orjk%3A12310
n4:aktivita
n17:Z n17:P
n4:aktivity
P(GA206/08/1126), Z(MSM6007665801)
n4:cisloPeriodika
7
n4:dodaniDat
n12:2013
n4:domaciTvurceVysledku
n7:1804103
n4:druhVysledku
n19:J
n4:duvernostUdaju
n13:S
n4:entitaPredkladatele
n16:predkladatel
n4:idSjednocenehoVysledku
120170
n4:idVysledku
RIV/60076658:12310/12:43883390
n4:jazykVysledku
n21:eng
n4:klicovaSlova
Polyploidy; Hybridization; Flow cytometry; Genome size; Chromosome number; Centaurea sect. Jacea; BARRIERS; DIFFERENTIATION; JACEA; GENOME SIZE; CENTRAL-EUROPE
n4:klicoveSlovo
n9:JACEA n9:Chromosome%20number n9:CENTRAL-EUROPE n9:DIFFERENTIATION n9:Flow%20cytometry n9:GENOME%20SIZE n9:Genome%20size n9:Hybridization n9:BARRIERS n9:Centaurea%20sect.%20Jacea n9:Polyploidy
n4:kodStatuVydavatele
AT - Rakouská republika
n4:kontrolniKodProRIV
[07F41D2D1338]
n4:nazevZdroje
PLANT SYSTEMATICS AND EVOLUTION
n4:obor
n20:EF
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
1
n4:projekt
n15:GA206%2F08%2F1126
n4:rokUplatneniVysledku
n12:2012
n4:svazekPeriodika
298
n4:tvurceVysledku
Koutecký, Petr
n4:wos
000306954700013
n4:zamer
n5:MSM6007665801
s:issn
0378-2697
s:numberOfPages
12
n3:doi
10.1007/s00606-012-0641-5
n18:organizacniJednotka
12310