ŠMARDA, Petr and Petr BUREŠ. Geographical pattern in genome size of Festuca pallens: phylogeographical interpretation of distribution range of polyploid complex. In XVII. International Botanical Congress - Abstracts. Vienna: IBC Organizing Committee, 2005, p. 472-472.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Geographical pattern in genome size of Festuca pallens: phylogeographical interpretation of distribution range of polyploid complex
Name in Czech Geografický pattern ve velikosti genomu Festuca pallens: fylogeografická interpretace areálu polyploidního komplexu
Authors ŠMARDA, Petr (203 Czech Republic, guarantor) and Petr BUREŠ (203 Czech Republic).
Edition Vienna, XVII. International Botanical Congress - Abstracts, p. 472-472, 1 pp. 2005.
Publisher IBC Organizing Committee
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10600 1.6 Biological sciences
Country of publisher Austria
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/05:00013866
Organization unit Faculty of Science
Keywords in English DNA content; Poaceae
Tags DNA content, Poaceae
Changed by Changed by: prof. RNDr. Petr Bureš, Ph.D., učo 2635. Changed: 16/8/2005 18:21.
Abstract
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.
Abstract (in Czech)
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.
Links
MSM0021622416, plan (intention)Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase
Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time
PrintDisplayed: 1/5/2024 04:44