Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution
Karyological variation, reproductive isolation, morphological differentiation and geographic distribution of the cytotypes of Centaurea phrygia were investigated in Central Europe. Occurrence of two dominant cytotypes, diploid (2n = 22) and tetraploid (2n = 44), was confirmed and additionally triplo...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Subjects: | |
Online Access: | https://kramerius.lib.cas.cz/view/uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 |
id |
ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 |
---|---|
record_format |
openpolar |
spelling |
ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 2024-03-17T08:57:25+00:00 Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution Diploidní a tetraploidní Centaurea phrygia – reprodukční bariéry, morfologie a rozšíření Koutecký, Petr Štěpánek, Jan Baďurová, Tereza https://kramerius.lib.cas.cz/view/uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 unknown https://kramerius.lib.cas.cz/view/uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 policy:public Centaurea sect. Jacea Centaurea phrygia Centaurea melanocalathia flow cytometry geographic distribution multivariate morphometric analysis nomenclature polyploidy reproductive isolation taxonomy article model:article ftczechacademysc 2024-02-19T22:57:32Z Karyological variation, reproductive isolation, morphological differentiation and geographic distribution of the cytotypes of Centaurea phrygia were investigated in Central Europe. Occurrence of two dominant cytotypes, diploid (2n = 22) and tetraploid (2n = 44), was confirmed and additionally triploid, pentaploid and hexaploid ploidy levels identified using flow cytometry. Allozyme variation as well as morphological and genome size data suggest an autopolyploid origin of the tetraploids. Crossing experiments and flow cytometric screening of mixed populations revealed strong reproductive isolation of the cytotypes. Multivariate morphometric analysis revealed significant differentiation between the cytotypes in several morphological characters (pappus length, length and colour of appendages on involucral bracts, involucre width). The cytotypes have a parapatric distribution with only a small contact zone: diploids occupy the whole of the Central and North European geographic range of the species except for the major part of the Western Carpathians, whereas tetraploids are confined to the Western Carpathians and adjacent areas, both cytotypes co-occurring only in a limited area of intra-montane basins of the Western Carpathians. Based on this array of data, taxonomic treatment of the cytotypes as autonomous species is proposed. The name Centaurea phrygia is applied to the diploids and the name C. erdneri belongs to the tetraploids; nomenclature of hybrids with C. jacea is also resolved. Article in Journal/Newspaper Centaurea phrygia Czech Academy of Sciences: dKNAV |
institution |
Open Polar |
collection |
Czech Academy of Sciences: dKNAV |
op_collection_id |
ftczechacademysc |
language |
unknown |
topic |
Centaurea sect. Jacea Centaurea phrygia Centaurea melanocalathia flow cytometry geographic distribution multivariate morphometric analysis nomenclature polyploidy reproductive isolation taxonomy |
spellingShingle |
Centaurea sect. Jacea Centaurea phrygia Centaurea melanocalathia flow cytometry geographic distribution multivariate morphometric analysis nomenclature polyploidy reproductive isolation taxonomy Koutecký, Petr Štěpánek, Jan Baďurová, Tereza Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
topic_facet |
Centaurea sect. Jacea Centaurea phrygia Centaurea melanocalathia flow cytometry geographic distribution multivariate morphometric analysis nomenclature polyploidy reproductive isolation taxonomy |
description |
Karyological variation, reproductive isolation, morphological differentiation and geographic distribution of the cytotypes of Centaurea phrygia were investigated in Central Europe. Occurrence of two dominant cytotypes, diploid (2n = 22) and tetraploid (2n = 44), was confirmed and additionally triploid, pentaploid and hexaploid ploidy levels identified using flow cytometry. Allozyme variation as well as morphological and genome size data suggest an autopolyploid origin of the tetraploids. Crossing experiments and flow cytometric screening of mixed populations revealed strong reproductive isolation of the cytotypes. Multivariate morphometric analysis revealed significant differentiation between the cytotypes in several morphological characters (pappus length, length and colour of appendages on involucral bracts, involucre width). The cytotypes have a parapatric distribution with only a small contact zone: diploids occupy the whole of the Central and North European geographic range of the species except for the major part of the Western Carpathians, whereas tetraploids are confined to the Western Carpathians and adjacent areas, both cytotypes co-occurring only in a limited area of intra-montane basins of the Western Carpathians. Based on this array of data, taxonomic treatment of the cytotypes as autonomous species is proposed. The name Centaurea phrygia is applied to the diploids and the name C. erdneri belongs to the tetraploids; nomenclature of hybrids with C. jacea is also resolved. |
format |
Article in Journal/Newspaper |
author |
Koutecký, Petr Štěpánek, Jan Baďurová, Tereza |
author_facet |
Koutecký, Petr Štěpánek, Jan Baďurová, Tereza |
author_sort |
Koutecký, Petr |
title |
Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
title_short |
Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
title_full |
Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
title_fullStr |
Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
title_full_unstemmed |
Differentiation between diploid and tetraploid Centaurea phrygia: mating barriers, morphology and geographic distribution |
title_sort |
differentiation between diploid and tetraploid centaurea phrygia: mating barriers, morphology and geographic distribution |
url |
https://kramerius.lib.cas.cz/view/uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 |
genre |
Centaurea phrygia |
genre_facet |
Centaurea phrygia |
op_relation |
https://kramerius.lib.cas.cz/view/uuid:9a39f741-525f-4b29-afe6-e153c0bdea77 |
op_rights |
policy:public |
_version_ |
1793766585050071040 |