Geographic distribution of the two cytotypes of Alnus glutinosa in Europe

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Polyploidy in plants has been studied extensively. In many groups, two or more cytotypes represent separate biological entities with distinct distributions, histories and ecology.

Geographical locations of populations of Alnus glutinosa and A. incana across the study area.
Geographical locations of populations of Alnus glutinosa and A. incana across the study area. Full details in Mandák et al.

Mandák et al. analysed ploidy level variation in populations of Alnus glutinosa over the whole Europe. In addition to diploid populations they for the first time report the occurrence of tetraploid populations of A. glutinosa. The distribution of tetraploids is far from random, forming two, geographically very well delimited populations. The first one is situated in the Iberian Peninsula extending to North Africa. The second one occupies the area of the Dinaric Alps extending to south-western Greece.

Reference

Mandák, B., Vít, P., Krak, K., Trávníček, P., Havrdová, A., Hadincová, V., … Douda, J. (2015). Flow cytometry, microsatellites and niche models reveal the origins and geographical structure ofAlnus glutinosapopulations in Europe. Annals of Botany, 117(1), 107–120. http://dx.doi.org/10.1093/aob/mcv158


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