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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F06%3A00010848%21RIV10-GA0-15310___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Background and Aims: Polyploidization plays an important role in the evolution of many plant genera, including Koeleria. The knowledge of ploidy, chromosome number and genome size may enable correct taxonomic treatment when other features are insufficient as in Koeleria. Therefore, these characteristics and their variability were determined for populations of six central European Koeleria taxa. Methods: Chromosome number analysis was performed by squashing root meristems, and ploidy and 2C nuclear DNA content were estimated by flow cytometry. Key Results: Three diploids (K. glauca, K. macrantha var. macrantha and var. pseudoglauca), one tetraploid (K. macrantha var. majoriflora), one decaploid (K. pyramidata) and one dodecaploid (K. tristis) were found. The 2C nuclear DNA content of the diploids ranged from 4.85 to 5.20 pg. The 2C DNA contents of tetraploid, decaploid and dodecaploid taxa were 9.31 pg, 22.89 pg and 29.23 pg, respectively. The DNA content of polyploids within the K. macrantha aggregat Background and Aims: Polyploidization plays an important role in the evolution of many plant genera, including Koeleria. The knowledge of ploidy, chromosome number and genome size may enable correct taxonomic treatment when other features are insufficient as in Koeleria. Therefore, these characteristics and their variability were determined for populations of six central European Koeleria taxa. Methods: Chromosome number analysis was performed by squashing root meristems, and ploidy and 2C nuclear DNA content were estimated by flow cytometry. Key Results: Three diploids (K. glauca, K. macrantha var. macrantha and var. pseudoglauca), one tetraploid (K. macrantha var. majoriflora), one decaploid (K. pyramidata) and one dodecaploid (K. tristis) were found. The 2C nuclear DNA content of the diploids ranged from 4.85 to 5.20 pg. The 2C DNA contents of tetraploid, decaploid and dodecaploid taxa were 9.31 pg, 22.89 pg and 29.23 pg, respectively. The DNA content of polyploids within the K. macrantha aggregat
dcterms:title
Nuclear DNA Content Variation among Central European Koeleria Taxa Nuclear DNA Content Variation among Central European Koeleria Taxa
skos:prefLabel
Nuclear DNA Content Variation among Central European Koeleria Taxa Nuclear DNA Content Variation among Central European Koeleria Taxa
skos:notation
RIV/61989592:15310/06:00010848!RIV10-GA0-15310___
n3:aktivita
n4:Z n4:P
n3:aktivity
P(GA206/04/0786), P(LC06004), Z(AV0Z50380511)
n3:cisloPeriodika
1
n3:dodaniDat
n14:2010
n3:domaciTvurceVysledku
n12:1800477 n12:5190703
n3:druhVysledku
n17:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
489271
n3:idVysledku
RIV/61989592:15310/06:00010848
n3:jazykVysledku
n13:eng
n3:klicovaSlova
Chromosome number; polyploidy; nuclear DNA content; genome size variation; flow cytometry; grasses; Poaceae; Koeleria
n3:klicoveSlovo
n5:flow%20cytometry n5:genome%20size%20variation n5:Koeleria n5:nuclear%20DNA%20content n5:grasses n5:Chromosome%20number n5:Poaceae n5:polyploidy
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[74C06CEA4262]
n3:nazevZdroje
Annals of Botany
n3:obor
n7:EF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:projekt
n19:LC06004 n19:GA206%2F04%2F0786
n3:rokUplatneniVysledku
n14:2006
n3:svazekPeriodika
98
n3:tvurceVysledku
Lysák, M. A. Pečinka, A. Suchánková, P. Doležel, Jaroslav Trávníček, Bohumil
n3:zamer
n18:AV0Z50380511
s:issn
0305-7364
s:numberOfPages
6
n9:organizacniJednotka
15310