Počet záznamů: 1

Expressivity of apomixis in 2n + n hybrids from an apomictic and a sexual parent: insights into variation detected in Pilosella (Asteraceae: Lactuceae)

  1. 1.
    0364216 - BU-J 2012 RIV DE eng J - Článek v odborném periodiku
    Krahulcová, Anna - Krahulec, František - Rosenbaumová, R.
    Expressivity of apomixis in 2n + n hybrids from an apomictic and a sexual parent: insights into variation detected in Pilosella (Asteraceae: Lactuceae).
    Sexual Plant Reproduction. Roč. 24, č. 1 (2011), s. 263-274 ISSN 0934-0882
    Grant CEP: GA ČR GA206/08/0890
    Výzkumný záměr: CEZ:AV0Z60050516
    Klíčová slova: inheritance of apomixis * residual sexuality * unreduced hybrids
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 1.869, rok: 2011

    Reproductive variation was studied in the tetraploid Pilosella aurantiaca, hexaploid P. rubra (both species with facultative autonomous apospory) and in their 2n + n hybrids, which were obtained by crossing with a sexual pollen parent (tetraploid P. officinarum). The different DNA content in P. aurantiaca and P. officinarum demonstrated the actual 2n ? n origin, both spontaneous from the field and through experimental crosses, of their hexaploid hybrids. The octoploid 2n + n progeny were recovered from an experimental cross of P. rubra and P. officinarum. The reproductive pathways operating in two maternal facultatively apomictic species and in the hybrids were quantified using a flow cytometric analysis of seeds obtained from either open-pollinated or emasculated plants.
    Trvalý link: http://hdl.handle.net/11104/0199752