Propagation and breeding of red clover ( Trifolium pratense L.) in Russia was initiated about 200 years ago but the origin of present-day cultivars is disputed. Some authors argue that most Russian cultivars were derived from western European ones, whereas others support a Russian origin of the cultivars from local wild populations. In the present study we assessed the genetic variation at 17 allozyme loci in seven Russian cultivars, bearing the names of localities of the Urals, two American ones that have been used in Russia for scientific experiments and seven wild populations of the Urals and Western Siberia. Variation at the 17 protein loci supports the western European origin of the cultivars and also indicates that gene flow between cultivars and wild populations was limited or has not acted sufficiently long to affect the genetic composition of the red clover wild populations of the Urals.

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