Investigation of the variability of chloroplast DNA of some Astragalus spp. of sect. Helmia and A. arcanus of sect. Erioceras (Fabaceae)

Abstract

Analysis of chloroplast DNA sequences revealed a high polymorphism of the length and nucleotide composition of trnF–trnV and the intron trnL for Helmia section species of the genus Astragalus (Fabaceae). Molecular genetic studies of Astragalus species of the Helmia section were previously practically not carried out; sequencing of trnF–trnV and the intron trnL of chloroplast DNA for 7 species of the section, as well as the probable intersection hybrid Astragalus arcanus held for the first time. On the basis of genetic studies, clarified the relationship between species included in the section Helmia. The possible stages of sect. Helmia evolution are discussed. The taxonomic isolation of Astragalus permiensis has been confirmed; it is assumed not to be of Uralic, but of Siberian or Central Asian origin. Astragalus ionae belongs to the section Helmia is confirmed. Astragalus depauperatus s. l. is thought to be a complex of twin species. In this article, one of them is considered in the status of the species A. chakassiensis. Copy Translate