Abstract
Three repeated DNA sequences (rDNA 5S, 18S-5.8S-26S and telomeric repeats) were localised in the genomes ofLobelia brasiliensis andL. imperialis var.kanitzii (subg.Tupa), both with 2n = 28, by fluorescence in situ hybridization (FISH). The results were used to analyse the genomic relationship between the species. With probe pTa71, the karyotypes of these species showed only one NOR site. Probe pTa794, which contains 5S rDNA, demonstrated differences between the species. Telomeric sequences, studied with probe pLT11, were not detected in ectopic sites, but different telomeres showed signals of varying intensity. Based on the results obtained, considerations are made on karyotype evolution inLobelia.
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