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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Boletin de la Sociedad Argentina de Botanica

ISSN

1851-2372

e-ISSN

1851-2372

Volume of the periodical

56

Issue of the periodical within the volume

3

Country of publishing house

AR - ARGENTINA

Number of pages

20

Pages from-to

307-326

UT code for WoS article

000717950700004

EID of the result in the Scopus database

2-s2.0-85117389429