Abstract

Genetic variation at 27 enzyme loci was studied in 24 Transcaucasian populations of Aegilops squarrosa: 12 ssp. eusquarrosa and 12 ssp. strangulata populations. Most of the genetic variation was among populations: GST accounted for 0.67 and 0.64 for ssp. eusquarrosa and ssp. strangulata, respectively. The Acph1, Est2, Est5, Got1 and Got2 loci were found to be involved in the adaptive process of Ae. squarrosa subspecies divergence. Allele variation at the Ep locus is most likely to be neutral. The remaining 21 enzyme loci are under purifying selection of different intensities.

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