Karyotypic studies in Flourensia (Asteraceae) from Argentina.

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Karyotypic studies in Flourensia (Asteraceae) from Argentina. Twelve species of the American genus Flourensia DC. inhabit Argentina. Six of them grow in its central region, all endemic to it. Chromosomal number is known for most species, but no karyotypic studies have been done. Therefore, we studie...

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Autores principales: Delbón, Natalía, Bernardello, Gabriel, Cosa, María Teresa, Stiefkens, Laura
Formato: Artículo revista
Lenguaje:Español
Publicado: Sociedad Argentina de Botánica 2014
Materias:
Argentina central
Asteraceae
cariotipo
citogenética
Flourensia
número cromosómico
Central Argentina
karyotype
cytogenetics
chromosome number
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/7856
Aporte de:
Revistas de la UNC de Universidad Nacional de Córdoba
id I10-R10-article-7856
record_format ojs
spelling I10-R10-article-78562023-07-06T23:25:09Z Karyotypic studies in Flourensia (Asteraceae) from Argentina. Argentina central, Asteraceae, cariotipo, citogenética, Flourensia, número cromosómico Delbón, Natalía Bernardello, Gabriel Cosa, María Teresa Stiefkens, Laura Argentina central Asteraceae cariotipo citogenética Flourensia número cromosómico Central Argentina Asteraceae karyotype cytogenetics Flourensia chromosome number Karyotypic studies in Flourensia (Asteraceae) from Argentina. Twelve species of the American genus Flourensia DC. inhabit Argentina. Six of them grow in its central region, all endemic to it. Chromosomal number is known for most species, but no karyotypic studies have been done. Therefore, we studied the mitotic chromosomes of the six Central Argentinean species, performing qualitative and quantitative analysis of their karyotypes. Permanent mounts were made from root tips with classical techniques. All species had 2n=36: three with 14 m + 4 sm pairs and the remaining with 12 m + 6 sm pairs. The average chromosome length varied between 2.11 and 2.97 mm. Statistical differences were found for the variables C, Lt, R, and A1. Except for F. campestris, one or two pairs of satellites which varied in their location were found. The data obtained have taxonomic value since differences were found among nearly all species, suggesting that their speciation would have been accompanied by small chromosomal changes caused by inversions and/or translocations. En Argentina crecen 12 especies del género americano Flourensia DC. En su zona central habitan seis, todas endémicas de dicha región. Se conoce el número cromosómico de la mayoría de las especies, pero no hay estudios cariotípicos. Por ello, se estudiaron los cromosomas mitóticos de las seis especies centro-argentinas, realizando un análisis cualitativo y cuantitativo de sus cariotipos. Se realizaron preparados permanentes de ápices radicales con técnicas clásicas. Todas las especies presentaron 2n=36: tres de ellas con 14 pares m + 4 sm y las restantes con 12 pares m + 6 sm.La longitud cromósomica promedio varió entre 2,11 y 2,97 mm, habiéndose encontrado diferencias estadísticas en las variables largo cromosómico promedio, largo total del genoma haploide, índice braquial promedio y en el índice de asimetría intracromosómica. En todas las especies, excepto en F. campestris, se encontró uno o dos pares de satélites que variaron en su ubicación. Los datos obtenidos tienen valor taxonómico ya que se han encontrado diferencias entre casi todas las especies; además, sugieren que su especiación habría sido acompañada por pequeños cambios cromosómicos causados por inversiones y/o translocaciones Sociedad Argentina de Botánica 2014-07-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/7856 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 49 No. 1 (2014): Abril; 247-255 Boletín de la Sociedad Argentina de Botánica; Vol. 49 Núm. 1 (2014): Abril; 247-255 Boletín de la Sociedad Argentina de Botánica; v. 49 n. 1 (2014): Abril; 247-255 1851-2372 0373-580X 10.31055/1851.2372.v49.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/7856/8726
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-10
container_title_str Revistas de la UNC
language Español
format Artículo revista
topic Argentina central
Asteraceae
cariotipo
citogenética
Flourensia
número cromosómico
Central Argentina
Asteraceae
karyotype
cytogenetics
Flourensia
chromosome number
spellingShingle Argentina central
Asteraceae
cariotipo
citogenética
Flourensia
número cromosómico
Central Argentina
Asteraceae
karyotype
cytogenetics
Flourensia
chromosome number
Delbón, Natalía
Bernardello, Gabriel
Cosa, María Teresa
Stiefkens, Laura
Karyotypic studies in Flourensia (Asteraceae) from Argentina.
topic_facet Argentina central
Asteraceae
cariotipo
citogenética
Flourensia
número cromosómico
Central Argentina
Asteraceae
karyotype
cytogenetics
Flourensia
chromosome number
author Delbón, Natalía
Bernardello, Gabriel
Cosa, María Teresa
Stiefkens, Laura
author_facet Delbón, Natalía
Bernardello, Gabriel
Cosa, María Teresa
Stiefkens, Laura
author_sort Delbón, Natalía
title Karyotypic studies in Flourensia (Asteraceae) from Argentina.
title_short Karyotypic studies in Flourensia (Asteraceae) from Argentina.
title_full Karyotypic studies in Flourensia (Asteraceae) from Argentina.
title_fullStr Karyotypic studies in Flourensia (Asteraceae) from Argentina.
title_full_unstemmed Karyotypic studies in Flourensia (Asteraceae) from Argentina.
title_sort karyotypic studies in flourensia (asteraceae) from argentina.
description Karyotypic studies in Flourensia (Asteraceae) from Argentina. Twelve species of the American genus Flourensia DC. inhabit Argentina. Six of them grow in its central region, all endemic to it. Chromosomal number is known for most species, but no karyotypic studies have been done. Therefore, we studied the mitotic chromosomes of the six Central Argentinean species, performing qualitative and quantitative analysis of their karyotypes. Permanent mounts were made from root tips with classical techniques. All species had 2n=36: three with 14 m + 4 sm pairs and the remaining with 12 m + 6 sm pairs. The average chromosome length varied between 2.11 and 2.97 mm. Statistical differences were found for the variables C, Lt, R, and A1. Except for F. campestris, one or two pairs of satellites which varied in their location were found. The data obtained have taxonomic value since differences were found among nearly all species, suggesting that their speciation would have been accompanied by small chromosomal changes caused by inversions and/or translocations.
publisher Sociedad Argentina de Botánica
publishDate 2014
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/7856
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AT cosamariateresa karyotypicstudiesinflourensiaasteraceaefromargentina
AT stiefkenslaura karyotypicstudiesinflourensiaasteraceaefromargentina
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first_indexed 2022-08-20T01:20:17Z
last_indexed 2023-07-07T00:12:58Z
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