2005
Geographical pattern in genome size of Festuca pallens: phylogeographical interpretation of distribution range of polyploid complex
ŠMARDA, Petr a Petr BUREŠZákladní údaje
Originální název
Geographical pattern in genome size of Festuca pallens: phylogeographical interpretation of distribution range of polyploid complex
Název česky
Geografický pattern ve velikosti genomu Festuca pallens: fylogeografická interpretace areálu polyploidního komplexu
Autoři
ŠMARDA, Petr (203 Česká republika, garant) a Petr BUREŠ (203 Česká republika)
Vydání
Vienna, XVII. International Botanical Congress - Abstracts, od s. 472-472, 1 s. 2005
Nakladatel
IBC Organizing Committee
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Rakousko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Kód RIV
RIV/00216224:14310/05:00013866
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
DNA content; Poaceae
Štítky
Změněno: 16. 8. 2005 18:21, prof. RNDr. Petr Bureš, Ph.D.
V originále
Considerable genome size variability in both ploidy levels and at various spatial scales was detected in Festuca pallens Host using DAPI stained flow-cytometry. Witnin- and among related sites, DNA content was relatively homogenous. However, mean differences up to 5.9 % between nearby localities or up to 11.6 % within the populations were rarely detected. Within the whole distribution area, maximum differences 15.9 % (in diploids) and 14.0 % (in tetraploids) were observed. In both ploidy levels, genome size was correlated with geographical coordinates, with the largest genomes situated in the southeastern parts. Mutual geographic relation between DNA content of diploids and tetraploids was confirmed. Tetraploids have in general lower DNA content than expected by doubling of their diploid progenitors. The main differences in DNA content of tetraploids were attributed with affiliation to 3 different, taxonomically unevaluated types. Affinity of larger genomes to different types of glacial vegetation (steppes rather than periglacial tundra, together with relation to relict habitats in diploids, give reasons for phylogeographic interpretations.
Česky
Considerable genome size variability in both ploidy levels and at various spatial scales was detected in Festuca pallens Host using DAPI stained flow-cytometry. Witnin- and among related sites, DNA content was relatively homogenous. However, mean differences up to 5.9 % between nearby localities or up to 11.6 % within the populations were rarely detected. Within the whole distribution area, maximum differences 15.9 % (in diploids) and 14.0 % (in tetraploids) were observed. In both ploidy levels, genome size was correlated with geographical coordinates, with the largest genomes situated in the southeastern parts. Mutual geographic relation between DNA content of diploids and tetraploids was confirmed. Tetraploids have in general lower DNA content than expected by doubling of their diploid progenitors. The main differences in DNA content of tetraploids were attributed with affiliation to 3 different, taxonomically unevaluated types. Affinity of larger genomes to different types of glacial vegetation (steppes rather than periglacial tundra, together with relation to relict habitats in diploids, give reasons for phylogeographic interpretations.
Návaznosti
| MSM0021622416, záměr |
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