| Abstrakt: |
Using nine DNA barcode markers, we investigated genetic differences among Heracleum mantegazzianum Sommier & Levier samples from the species' native range in the Western Caucasus (Karachai-Cherkess Republic), invasive large Heracleum species from Kirovsk (Murmansk oblast) and Syktyvkar (Komi Republic), and Heracleum sosnowskyi Manden. samples from Nalchik (Kabardino-Balkar Republic). New sequence data for the markers rbcL, matK, trnL, trnH-psbA, rps16, trnQ-rps16, rps16-trnK, rpl32-trnL, ITS, and ETS were compared with GenBank data for the investigated and other Heracleum species. The ITS and ETS sequences of nuclear DNA exhibited certain polymorphism level, aligning well with the species boundaries of most Heracleum genus members analyzed, except for those identified morphologically as H. mantegazzianum and H. sosnowskyi. Molecular data indicate that all large invasive Heracleum samples collected in northern European Russia and the Western Caucasus likely belong to H. mantegazzianum. Our results show the absence of H. sosnowskyi in the Murmansk oblast and the Komi Republic. A possible explanation for these findings is the hybridization of H. mantegazzianum and H. sosnowskyi, which may have occurred spontaneously during their initial introduction at the Polar-Alpine Botanical Garden in Kirovsk, Murmansk oblast. [ABSTRACT FROM AUTHOR] |
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