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Production of polyhaploids by facultatively apomictic Pilosella can result in formation of new genotypes via genome doubling
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SYSNO ASEP 0364311 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Production of polyhaploids by facultatively apomictic Pilosella can result in formation of new genotypes via genome doubling Tvůrce(i) Krahulec, František (BU-J) RID, ORCID
Krahulcová, Anna (BU-J) RID, ORCID
Rosenbaumová, R. (CZ)
Plačková, Ivana (BU-J)Celkový počet autorů 4 Zdroj.dok. Preslia. - : Česká botanická společnost - ISSN 0032-7786
Roč. 83, č. 3 (2011), s. 471-490Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova polyploid-polyhaploid-polyploid cycle ; apomixis ; genome doubling Vědní obor RIV EF - Botanika CEP GA206/08/0890 GA ČR - Grantová agentura ČR CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000295384300013 Anotace Haploid parthenogenesis in facultatively apomictic Pilosella generated polyhaploid progeny (with half the maternal chromosome set) both in natural populations and garden experiments. Production of polyhaploids varied considerably among different species, hybridogenous species and hybrids. A two-step process by which new genotypes of both P. aurantiaca (tetraploid) and P. rubra (hexaploid) were formed under garden conditions during a polyploid−polyhaploid−polyploid cycle is described. In the first step, the maternal plants generated dihaploid and trihaploid F1 progeny, respectively. Consequently, the F2 progeny resulting from the second step had a double ploidy level, identical to that of the original maternal parent. The complete process was autonomous, without contribution of pollen from parent genotype. This cycle necessarilly implicates increasing homozygosity in F2 progeny when compared to original maternal polyploid plant. 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
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