Abstract
IN several publications issued during the last few years,1 M. L. Blaringhem has asserted that the hybrid Geum urbanum × rivale, sometimes described as Geum intermedium, retains its character unaltered during subsequent generations, and he cites this plant therefore as an example of the constancy of an interspecific hybrid. In making this assertion M. Blaringhem neglects to take account of the result of experiments carried out by us,2, 3 which are in direct contradiction to the view he puts forward. We should like therefore to direct attention to the facts observed by us and confirmed by further experiments.
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References
Blaringhem, L. Les Problèmes de l'hérédité expérimentale. Paris, Flammarion, 1919. Habilité et fertilité de l'hybride Geum urbanum L. × rivale L., Comptes rendus Acad. Sci. T. 170. Paris, 1920. Nouvelles recherches sur les hybrides, Comptes rendus de l'Ass. Française pour l'Avanc. des Sciences, 1922.
Rosén, D. Kreuzungsversuche G. urbanum L. × rivale L. Botaniska Notiser, 1916.
Weiss, F. E. Geum intermedium (Ehr) and its segregates. Report Brit. Ass., Dundee, 1912.
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WEISS, F., ROSÉN., D. The Supposed Constancy of the Hybrid between the Common and the Water Avens, Geutn urbanum × rivale. Nature 114, 500 (1924). https://doi.org/10.1038/114500a0
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DOI: https://doi.org/10.1038/114500a0
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