Table 1.

Summary of the ploidy levels found in Allium oleraceum in Europe according to the literature and present records

Country	References	Ploidy level
Austria	Geitler and Tschermak-Woess (1946), Tschermak-Woess (1947), Wittmann (1984), Speta (1984), Wetschnig (1992), Baranyi and Greilhuber (1999), Dobeš and Vitek (2000)	4x, 5x, 6x
Belorussia	Parfenov (1980) sec. Agapova (1990)	4x
Czech Republic	Měsíček and Jarolímová (1992)*, Fialová (1996)*, present study*	4x, 5x, 6x
Finland	Arohonka (1982), Halkka (1985), Åström and Hæggström (2004)*	4x, 5x
France	Jauzein and Tison (1999)	4x
Germany	Speta (1984), Åström and Hæggström (2004)	4x, 5x
Great Britain	Vosa (1976)	4x
Hungary	Krahulcová (2003)	3x
Italy	Gadella and Kliphuis (1970) sec. Moore (1973), Capineri et al. (1978), Baranyi and Greilhuber (1999)	4x, 5x
Lithuania	Vakhtina and Kudrjassova (1985), Karpavicienė (2007)*	4x, 5x
Macedonia	Šopova (1972)	4x
Norway	Laane and Lie (1985)	4x, 5x
Poland	Pogan et al. (1986), Joachimiak in Pogan et al. (1990)	4x
Russia (European part)	Vakhtina (1984), Vakhtina and Kudrjassova (1985)	3x, 5x
Slovakia	Váchová and Feráková (1978), Májovský and Murín (1987), Murín et al. (1999)	4x
Spain	Fernandez Casas et al. (1980), Pastor (1982)	4x, 5x, 6x
Sweden	Wittmann (1984), Lövkvist and Hultgard (1999), Åström and Hæggström (2004)	4x, 5x
Switzerland	Baranyi and Greilhuber (1999)	5x
Ukraine	Kish (2001)	5x

* Occurrence of cytotype-mixed populations was reported in the source.