University of Cambridge > > Plant Sciences Departmental Seminars > Chromosome structure in the establishment and divergence of polyploids

Chromosome structure in the establishment and divergence of polyploids

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One problem facing the establishment of polyploids is fertility. Here I examine the potential role of chromosome divergence in establishing barriers between homeologues and populations, enhancing fertility, and leading to polyploid establishment and subsequent divergence. I look at the role of chromosome restructuring (especially inversions) in establishing barriers to recombination and then extend that understanding to data obtained from natural and synthetic polyploids, particularly in genera Tragopogon and Nicotiana, where there can be a substantial chromosomal restructuring. I consider how the organization and abundance of repeats in angiosperm polyploids may influence meiosis, which in turn will influence offspring fertility.

This talk is part of the Plant Sciences Departmental Seminars series.

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