About: Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens.

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About: Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Ploidy levels and chromosome numbers for 24 species of Festuca L. from 29 sites in Bolivia, Colombia, Ecuador and Venezuela are given. The ploidy level of 22 species is reported for the first time. A higher proportion of tetraploids in north South America and the high frequence of polyploids in the whole continent are documented. In combination with chromosome counts, ploidy level was determined using flow cytometry in 4- to 5 1/2-year-old herbarium specimens and mature caryopses. Flow cytometric determination from seeds was more reliable than determination from herbarium specimens. In herbarium specimens, the youngest, fresh green leaves, still hidden in sheaths seem to be most suitable for cytometric determination. In old, brownish leaves or poorly preserved herbarium specimens, the degradation of DNA signal in flow histograms was documented. DNA content measured in seeds was always higher than that measured in herbarium specimens, which may caused by the presence of different cytosolic compounds. Ploidy levels and chromosome numbers for 24 species of Festuca L. from 29 sites in Bolivia, Colombia, Ecuador and Venezuela are given. The ploidy level of 22 species is reported for the first time. A higher proportion of tetraploids in north South America and the high frequence of polyploids in the whole continent are documented. In combination with chromosome counts, ploidy level was determined using flow cytometry in 4- to 5 1/2-year-old herbarium specimens and mature caryopses. Flow cytometric determination from seeds was more reliable than determination from herbarium specimens. In herbarium specimens, the youngest, fresh green leaves, still hidden in sheaths seem to be most suitable for cytometric determination. In old, brownish leaves or poorly preserved herbarium specimens, the degradation of DNA signal in flow histograms was documented. DNA content measured in seeds was always higher than that measured in herbarium specimens, which may caused by the presence of different cytosolic compounds. (en)
Title	Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens. Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens. (en)
skos:prefLabel	Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens. Ploidy Level Variability in South American Fescues (Festuca L., Poaceae): Use of Flow Cytometry in Up to 5 1/2-year-Old Caryopses and Herbarium Specimens. (en)
skos:notation	RIV/00216224:14310/06:00015593!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GD524/05/H536), P(LC06073), Z(MSM0021622416)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Šmarda, 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	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	492332
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/06:00015593
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Polyploidy; chromosome number; Andes; biogeography; dessicated tissue (en)
http://linked.open.../riv/klicoveSlovo	Andes biogeography Polyploidy chromosome number dessicated tissue
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[889013B296FE]
http://linked.open...i/riv/nazevZdroje	Plant Biology
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Evolutionary ecological analysis of biological systems: research centrum for PhD studies Biodiversity Research Center
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	8
http://linked.open...iv/tvurceVysledku	Šmarda, Petr Stančík, Dan
http://linked.open...ain/vavai/riv/wos	000235078600008
http://linked.open...n/vavai/riv/zamer	Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time
issn	1435-8603
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	14310

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