Interspecific hybridization in the genus Hieracium (s. str.) ? evidence for bidirectional gene flow and spontaneous allopolyploidization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F11%3A00364321" target="_blank" >RIV/67985939:_____/11:00364321 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00606-011-0441-3" target="_blank" >http://dx.doi.org/10.1007/s00606-011-0441-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00606-011-0441-3" target="_blank" >10.1007/s00606-011-0441-3</a>

Result language

angličtina

Original language name

Interspecific hybridization in the genus Hieracium (s. str.) ? evidence for bidirectional gene flow and spontaneous allopolyploidization

Original language description

Well-documented cases of recent interspecific hybridization in Hieracium s. str. are very rare. We report combined evidence on recent hybridization between two diploid species, H. alpinum and H. transsilvanicum, based on additive patterns of nrDNA polymorphism (ITS), an intermediate position of hybrid plants in PCO analyses based on AFLP phenotypes, and additivity at one allozyme locus. Two hybrids were diploid while one was surprisingly tetraploid. This is the first record of spontaneous polyploidization following interspecific crossing in the genus. Allozyme data suggest the origin of this tetraploid via a triploid bridge with subsequent backcrossing to H. alpinum. All H. x krasani hybrids had the H. alpinum cpDNA haplotype while H. transsilvanicum served as a pollen donor. The hybrids occurred together with abundant H. alpinum plants; paternal H. transsilvanicum was missing. The direction of hybridization might be influenced by the frequency of parental taxa at the locality.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/GAP506%2F10%2F1363" target="_blank" >GAP506/10/1363: Phylogeny of subtribe Hieraciinae (Asteraceae) ? a model example of contrasting evolutionary strategies in closely related lineages</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Plant Systematics and Evolution

ISSN

0378-2697

e-ISSN

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Volume of the periodical

293

Issue of the periodical within the volume

1

Country of publishing house

AT - AUSTRIA

Number of pages

9

Pages from-to

237-245

UT code for WoS article

000290491000023

EID of the result in the Scopus database

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