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Polyploidy, reproductive biology, and Rosaceae: understanding evolution and making classifications

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Abstract

The relationship between polyploidy and breeding system is of critical importance for understanding evolution and improving the taxonomy of large Rosaceous genera. Reviewing the data available for the family and for tribe Pyreae (formerly subfamily Maloideae) in particular, it appears that hybridization, pseudogamous gametophytic apomixis, polyploidy, and self-compatibility are closely linked. Studies of the evolutionary significance of any one or two of these factors need to consider the others as well. Taxonomic decisions likewise need to be informed by knowledge of how these factors affect patterns of phenetic and genetic variation.

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  1. Green Plant Herbarium (TRT), Department of Natural History, Royal Ontario Museum, 100 Queen’s Park, Toronto, Canada, M5S 2C6

    T. A. Dickinson

  2. Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Canada, M5S 3B2

    T. A. Dickinson, E. Lo & N. Talent

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Dickinson, T., Lo, E. & Talent, N. Polyploidy, reproductive biology, and Rosaceae: understanding evolution and making classifications. Plant Syst. Evol. 266, 59–78 (2007). https://doi.org/10.1007/s00606-007-0541-2

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