Abstract
Pulses of whole genome duplications occurred within numerous angiosperm lineages near and subsequent to the K-Pg boundary. These duplications frequently were followed by subtractions in chromosome number within a ploidal level, i,e., dysploidy. Single products of WGD may have generated more than one dysploid species. Such species in turn may have generated other dysploid species through additional chromosomal rearrangements or through processes of divergent evolution. As a consequence, the genesis of initial polyploids within given phylads likely was followed by a wave of dysploid species formation. If polyploids are more tolerant than diploids of environmental change, as they seem to be, then polyploids and their dysploid derivatives are likely to represent an increasing proportion of flowering plant species in the next hundreds of millennia.
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The author is most grateful to Martin Lysak and to two anonymous reviewers for their thoughtful critiques of the manuscript.
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Levin, D.A. Did dysploid waves follow the pulses of whole genome duplications?. Plant Syst Evol 306, 75 (2020). https://doi.org/10.1007/s00606-020-01704-5
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DOI: https://doi.org/10.1007/s00606-020-01704-5