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Populations of Pilosella species in ruderal habitats in the city of Prague: consequences of the spread of P. aurantiaca and P. rothiana

Result description

Consequences of Pilosella aurantiaca and P. rothiana (stabilized hybridogenous species P. echioides > P. officinarum) spreading into three semi-ruderal localities in the city of Prague were studied. Numbers of chromosomes / DNA ploidy level and mode of reproduction are given for all the species and hybrids studied. Both P. aurantiaca and P. rothiana are apomictic and tetraploid with 2n =4x = 36. Pilosella rothiana hybridizes with pentaploid P. piloselloides (P. xheterodoxa, 2n = 6x = 53/54) and tetraploid P. officinarum (P. xbifurca, 2n = 6x = 54). Pilosella aurantiaca hybridizes with tetraploid P. caespitosa (P. xfuscoatra, 2n = 4x = 36), P. piloselloides (P. xderubella, 2n =5x = 45), P. officinarum (P. xrubm, 2n = 6x) P. mthiana (2n = 6x =54), P. xbifurca (with 2n = 5x =45) and P. visianii (tetraploid, 2n = 4x = 36). Hybrids of P. aurantiaca with tetraploid P. xleptophyton were of two types, the tetraploid hybrid originating from parental reduced gametes and the hexaploid hybrid originating from a reduced and an unreduced parental gamete, respectively. Introgression from apomictic P. bauhini towards sexual P. officinarum was found in a hybrid swarm in one of the populations studied. Evolutionary potential of recent hybrids was evaluated with respect to their mode of reproduction: most of the recent hybrids were not apomictic. It seems impossible to predict the mode of reproduction from that of the parental species.

Keywords

Pilosella aurantiacaPilosella rothianahybridization

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Populations of Pilosella species in ruderal habitats in the city of Prague: consequences of the spread of P. aurantiaca and P. rothiana

  • Original language description

    Consequences of Pilosella aurantiaca and P. rothiana (stabilized hybridogenous species P. echioides > P. officinarum) spreading into three semi-ruderal localities in the city of Prague were studied. Numbers of chromosomes / DNA ploidy level and mode of reproduction are given for all the species and hybrids studied. Both P. aurantiaca and P. rothiana are apomictic and tetraploid with 2n =4x = 36. Pilosella rothiana hybridizes with pentaploid P. piloselloides (P. xheterodoxa, 2n = 6x = 53/54) and tetraploid P. officinarum (P. xbifurca, 2n = 6x = 54). Pilosella aurantiaca hybridizes with tetraploid P. caespitosa (P. xfuscoatra, 2n = 4x = 36), P. piloselloides (P. xderubella, 2n =5x = 45), P. officinarum (P. xrubm, 2n = 6x) P. mthiana (2n = 6x =54), P. xbifurca (with 2n = 5x =45) and P. visianii (tetraploid, 2n = 4x = 36). Hybrids of P. aurantiaca with tetraploid P. xleptophyton were of two types, the tetraploid hybrid originating from parental reduced gametes and the hexaploid hybrid originating from a reduced and an unreduced parental gamete, respectively. Introgression from apomictic P. bauhini towards sexual P. officinarum was found in a hybrid swarm in one of the populations studied. Evolutionary potential of recent hybrids was evaluated with respect to their mode of reproduction: most of the recent hybrids were not apomictic. It seems impossible to predict the mode of reproduction from that of the parental species.

  • Czech name

  • Czech description

Classification

  • Type

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

  • CEP classification

  • OECD FORD branch

    10611 - Plant sciences, botany

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Preslia

  • ISSN

    0032-7786

  • e-ISSN

  • Volume of the periodical

    92

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    24

  • Pages from-to

    167-190

  • UT code for WoS article

    000573572400004

  • EID of the result in the Scopus database

    2-s2.0-85093098624