Evolutionary processes within populations of facultative apomicts

Name: Evolutionary processes within populations of facultative apomicts
Researchers: Flégrová Monika (member of of research group)
Chrtek Jindřich (member of of research group)
Krahulcová Anna (member of of research group)
Mahelka Václav (member of of research group)
Plačková Ivana (member of of research group)
Urfus Tomáš (member of of research group)
Project Type: A - major international projects (at least 3 states)
Realization from: 2008
Realization to: 2012
Summary: Two groups with facultative apomicts will be studied: the degree of residual sexuality is known at least at some members of Hieracium subgen. Pilosella, its degree at Rubus is estimated from population composition. The cpDNA will be studied at Hieracium hybrids in two different regions to test the possibility of extrapolation of findings on the high role of apomictic mothers for the formation of hybrids. The cytotype structure of Rubus populations will include also local types not studied yet. The importance of residual sexuality will be studied by analysis of progeny from experimental hybridisations as well as at selected mothers in the field; the results will confronted with the situation within populations. We shall use mostly experimental hybridisation of different cytotypes in Hieracium, and molecular markers in Rubus. We shall test the role of diploid hybrids as a switch for polyploidisation due to more often formation of unreduced gametes than at diploid parents with regular meiosis.

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