Estudios cromosómicos en especies de Hypochaeris l. (Asteraceae, Lactuceae) de Chile

• Carlos M Baeza ^[1] ; Carolina Cabezas ^[1] ; Anass Terrab ^[2] ; Tod Stuessy ^[2] ; Eduardo Ruiz ^[1] ; Maria Negritto ^[1] ; Estrella Urtubey ^[3]
  1. [1] Universidad de Concepción

     Universidad de Concepción

     Comuna de Concepción, Chile

     
  2. [2] University of Vienna

     University of Vienna

     Innere Stadt, Austria

     
  3. [3] Museo de La Plata, Paseo del Bosque División Plantas Vasculares

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• Localización: Gayana botánica, ISSN-e 0717-6643, ISSN 0016-5301, Vol. 64, Nº. 2, 2007, págs. 245-249
• Idioma: español
• Títulos paralelos:
  • Cromosome studies in species of hypochaeris L.. (Asteraceae, Lactuceae) from Chile
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  • The genus Hypochaeris (Asteraceae, Lactuceae) contains twelve species in Europe, three in Asia, and approximately 50 in South America. In this paper, we worked with mitotic chromosomes of three different species of Hypochaeris from Chile: H. acaulis, H. incana and H. scorzonerae. The species are very different in morphology and geographic distribution. The aim of this work was to compare the chromosome morphology of these species. We found that the chromosomes are different in size and morphology in H. acaulis (smaller than 6 µm and only chromosome 3 having a secondary constriction on the short arm). In H. incana and H. scorzonerae the chromosomes are very similar in size, and chromosomes 2 (on the long arm) and 3 (on the short arm) contain secondary constrictions. A tetraploid is reported for H. scorzonerae