CYTOGENETIC STUDIES OF SOME HYPOCHOERIS SPECIES (COMPOSITAE) FROM BRAZIL |
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| Authors: | Claudete F Ruas Paulo M Ruas Nelson I Matzenbacher Gisele Ross Célio Bernini André L L Vanzela |
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| Institution: | 1. Universidade Estadual de Londrina, Departamento de Biologia Geral, Londrina, Paraná, Brazil;2. Universidade Federal do Rio Grande do Sul, Departamento De Botânica, Porto Alegre, Rio Grande do Sul, Brazil |
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| Abstract: | Karyotypes of nine Brazilian taxa of genus Hypochoeris were studied utilizing root-tip mitotic metaphases. Two distinct groups were found. One group includes six species that showed high asymmetric bimodal karyotypes, while the second group has two species that have a karyotype similar to those observed in European species. All the species have karyotypes with 2n = 8 that are very uniform within each group, with only small morphological differences. Nucleolar organizing region and C-band patterns are shown for H. brasiliensis. |
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