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Ecological and evolutionary consequences of polyploidization
Pavlíková, Zuzana ; Münzbergová, Zuzana (advisor) ; Rooks, Frederick (referee)
The frequency of polyploidy in natural populations is much more common than previously thought, suggesting that polyploidy must bring their holders either long or at least short term evolutionary advantage compared with their diploid ancestors, because otherwise they would not expand massively. The thesis deals with the consequences of polyploidy for genome, meiosis, mode of reproduction and the resulting viability of polyploid plants. It also describes and evaluates the possible reasons for the evolutionary success of polyploid plants. It also described the creation polyploids in diploid populations, the interactions between diploids and polyploids and the mechanisms of creation of reproductive isolation between cytotypes. Further, I paid attention to the interactions between polyploidy, herbivores and pollinators. In conclusion, I mention methods of synthesis neopolyploid plants, the possibility of their use and methods of detection of ploidy in plants.
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Ecological and evolutionary consequences of polyploidization
Pavlíková, Zuzana ; Münzbergová, Zuzana (advisor) ; Rooks, Frederick (referee)
The frequency of polyploidy in natural populations is much more common than previously thought, suggesting that polyploidy must bring their holders either long or at least short term evolutionary advantage compared with their diploid ancestors, because otherwise they would not expand massively. The thesis deals with the consequences of polyploidy for genome, meiosis, mode of reproduction and the resulting viability of polyploid plants. It also describes and evaluates the possible reasons for the evolutionary success of polyploid plants. It also described the creation polyploids in diploid populations, the interactions between diploids and polyploids and the mechanisms of creation of reproductive isolation between cytotypes. Further, I paid attention to the interactions between polyploidy, herbivores and pollinators. In conclusion, I mention methods of synthesis neopolyploid plants, the possibility of their use and methods of detection of ploidy in plants.
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