Počet záznamů: 1
Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization
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SYSNO ASEP 0364321 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Interspecific hybridization in the genus Hieracium (s. str.) – evidence for bidirectional gene flow and spontaneous allopolyploidization Tvůrce(i) Mráz, P. (CH)
Chrtek, Jindřich (BU-J) RID, ORCID
Fehrer, Judith (BU-J) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. Plant Systematics and Evolution. - : Springer - ISSN 0378-2697
Roč. 293, 1-4 (2011), s. 237-245Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. AT - Rakousko Klíč. slova additive polymorphism ; hybridization ; polyploidization Vědní obor RIV EF - Botanika CEP GAP506/10/1363 GA ČR - Grantová agentura ČR CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000290491000023 DOI 10.1007/s00606-011-0441-3 Anotace 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. Pracoviště Botanický ústav Kontakt Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Rok sběru 2012
Počet záznamů: 1