Cytotype variation and clonal diversity in polyploid apomictic populations of Pilosella (Compositeae, Cichorieae) introduced to southern Patagonia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F21%3A00546613" target="_blank" >RIV/67985939:_____/21:00546613 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.31055/1851.2372.v56.n3.32767" target="_blank" >https://doi.org/10.31055/1851.2372.v56.n3.32767</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31055/1851.2372.v56.n3.32767" target="_blank" >10.31055/1851.2372.v56.n3.32767</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cytotype variation and clonal diversity in polyploid apomictic populations of Pilosella (Compositeae, Cichorieae) introduced to southern Patagonia

Popis výsledku v původním jazyce

The genus Pilosella is native to Europe and Asia, but its species are successful invaders on most continents. These species form an agamic complex with common apomixis. Apomictic species hybridize and have different degree of residual sexuality. Main aim of this paper was to determine if interspecific hybridization already occurred in Patagonia. We analysed seed progeny collected at thirteen populations of Pilosella in southern Argentina and Chile. The taxonomic identity of plants, DNA ploidy level (using flow cytometry), chromosome number, reproduction, formation of parthenogenetic seeds and clonal identity (using isozyme phenotypes) were examined. No mixed-species population was recorded. Two apomictic clones of P. officinarum (one pentaploid and the other hexaploid) were found in populations: eight were hexaploid and one was mixed in cytotype composition. A new species for Patagonia, the apomictic pentaploid P. caespitosa, was represented by plants from two Argentinean populations. Some of the progeny plants, cultivated from seeds sampled at three localities, represented seed-fertile aneuploids the morphology of which suggest a hybrid origin with P. officinarum as one of the parental species. The presence of seed-fertile, aneuploid and parthenogenetic hybrids among the cultivated plants signifies an increased risk of the formation of new hybridogeneous genotypes of Pilosella in southern Patagonia.

Název v anglickém jazyce

Cytotype variation and clonal diversity in polyploid apomictic populations of Pilosella (Compositeae, Cichorieae) introduced to southern Patagonia

Popis výsledku anglicky

The genus Pilosella is native to Europe and Asia, but its species are successful invaders on most continents. These species form an agamic complex with common apomixis. Apomictic species hybridize and have different degree of residual sexuality. Main aim of this paper was to determine if interspecific hybridization already occurred in Patagonia. We analysed seed progeny collected at thirteen populations of Pilosella in southern Argentina and Chile. The taxonomic identity of plants, DNA ploidy level (using flow cytometry), chromosome number, reproduction, formation of parthenogenetic seeds and clonal identity (using isozyme phenotypes) were examined. No mixed-species population was recorded. Two apomictic clones of P. officinarum (one pentaploid and the other hexaploid) were found in populations: eight were hexaploid and one was mixed in cytotype composition. A new species for Patagonia, the apomictic pentaploid P. caespitosa, was represented by plants from two Argentinean populations. Some of the progeny plants, cultivated from seeds sampled at three localities, represented seed-fertile aneuploids the morphology of which suggest a hybrid origin with P. officinarum as one of the parental species. The presence of seed-fertile, aneuploid and parthenogenetic hybrids among the cultivated plants signifies an increased risk of the formation of new hybridogeneous genotypes of Pilosella in southern Patagonia.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Boletin de la Sociedad Argentina de Botanica

ISSN

1851-2372

e-ISSN

1851-2372

Svazek periodika

56

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

AR - Argentinská republika

Počet stran výsledku

20

Strana od-do

307-326

Kód UT WoS článku

000717950700004

EID výsledku v databázi Scopus

2-s2.0-85117389429