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The Significance of Hybridization for Plant Taxonomy and Evolution

G. Ledyard Stebbins
Taxon
Vol. 18, No. 1, Smithsonian Summer Institute in Systematics 1968, Part 1 (Feb., 1969), pp. 26-35
DOI: 10.2307/1218589
Stable URL: http://www.jstor.org/stable/1218589
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Significance of Hybridization for Plant Taxonomy and Evolution
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Abstract

The pattern of evolutionary phylogeny has been highly reticulate mainly on account of hybridization (crossing between individuals belonging to populations which have different adaptive norms) followed by stabilization and perpetuation of some of the hybrid derivatives. The significance of hybridization in obtaining a picture of evolutionary relationships is discussed. First the evolutionary advantages that might result from hybridization are considered, second the drawbacks; finally the ways and degrees to which such drawbacks may be overcome are discussed.

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