Abstract
The article presents the results of interpopulation analysis, phylogeny and ploidy study of Allium sabulosum Steven ex Bunge within the deserts of Kazakhstan. The studied taxon is the type species of the section Eremoprasum (Kamelin) F. O. Khassanov, R. M. Fritsch et N. Friesen and belongs to the subgenus Allium L, the main range of which covers the Iranian-Turanian and Central Asian desert regions. The studied samples from 10 populations were collected in 5 floristic regions of Kazakhstan, covering the following regions of the Republic: Mangistau, Kyzylorda, Karaganda, Ulytau, Zhambyl and Almaty. To determine ploidy, the collected samples were studied by flow cytometry. The results of nrITS and chloroplast fragment sequencing were used to construct a phylogenetic tree, which also includes data from the NCBI database. Of the 10 populations studied, samples from population 3 from the Balkhash-Alakol floristic region were particularly different. In this population, a hybrid (the second parent, which is unknown and was not included in the analysis) and samples of different ploidy (polyploid) were found. Tetraploid samples were found in the territory of the Betpak-Dala floristic region.