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

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    0364216 - BÚ 2012 RIV DE eng J - Journal Article
    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
    R&D Projects: GA ČR GA206/08/0890
    Institutional research plan: CEZ:AV0Z60050516
    Keywords : inheritance of apomixis * residual sexuality * unreduced hybrids
    Subject RIV: EF - Botanics
    Impact factor: 1.869, year: 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.
    Permanent Link: http://hdl.handle.net/11104/0199752

     
     
Number of the records: 1  

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