Abstract:
The dioecious genus Ilex (Aquifoliaceae) has been poorly studied from a cytogenetic point of view. Chromosome numbers of only ca. 5% of the species have been reported. In the present work the chromosome number of eight taxa from Argentina and Brazil are presented: Ilex taubertiana Loes., I. integerrima (Vell.) Reissek and I. pseudobuxus Reissek present 2n = 40, being this the first report for these species. A diploid number of 40 is also confirmed for I. paraguariensis A. St. - Hil, I. brevicuspis Reissek, I. dumosa Reissek and I. theezans Reissek, and 2n = 80 for I. argentina Lillo. Species with 2n = 40 (n = 20) show a regular meiotic behaviour with 20 bivalents, while I. argentina also shows a regular meiosis with 40 bivalents. Those individuals of I. paraguariensis analyzed in the present paper do not show a heteromorphic bivalent as previously reported and ascribed to sex chromosomes. © 2004 Taylor & Francis Group, LLC.
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Documento: |
Artículo
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Título: | Cytogenetic studies of Southern South-American Ilex |
Autor: | Greizerstein, E.J.; Poggio, L.; Greizerstein, E.J.; Poggio, L.; Giberti, G.C. |
Filiación: | Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, (UBA), Ciudad Universitaria, Pab. II, 4to piso. 1428, Buenos Aires, Argentina CIGEN (UNLP- CONICET-CIC), C. C. 4, 1836, Llavallol, Buenos Aires, Argentina CEFYBO (CONICET), Serrano 669, 1414, Buenos Aires, Argentina
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Palabras clave: | Aquifoliaceae; Chromosome number; Ilex; Polyploidy; Aquifoliaceae; Ilex; Ilex argentina; Ilex brevicuspis; Ilex dumosa; Ilex integerrima; Ilex paraguariensis; Ilex pseudobuxus; Ilex taubertiana; Ilex theezans |
Año: | 2004
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Volumen: | 57
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Número: | 1
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Página de inicio: | 19
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Página de fin: | 23
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DOI: |
http://dx.doi.org/10.1080/00087114.2004.10589367 |
Título revista: | Caryologia
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Título revista abreviado: | Caryologia
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ISSN: | 00087114
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v57_n1_p19_Greizerstein |
Referencias:
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Citas:
---------- APA ----------
Greizerstein, E.J., Poggio, L., Greizerstein, E.J., Poggio, L. & Giberti, G.C.
(2004)
. Cytogenetic studies of Southern South-American Ilex. Caryologia, 57(1), 19-23.
http://dx.doi.org/10.1080/00087114.2004.10589367---------- CHICAGO ----------
Greizerstein, E.J., Poggio, L., Greizerstein, E.J., Poggio, L., Giberti, G.C.
"Cytogenetic studies of Southern South-American Ilex"
. Caryologia 57, no. 1
(2004) : 19-23.
http://dx.doi.org/10.1080/00087114.2004.10589367---------- MLA ----------
Greizerstein, E.J., Poggio, L., Greizerstein, E.J., Poggio, L., Giberti, G.C.
"Cytogenetic studies of Southern South-American Ilex"
. Caryologia, vol. 57, no. 1, 2004, pp. 19-23.
http://dx.doi.org/10.1080/00087114.2004.10589367---------- VANCOUVER ----------
Greizerstein, E.J., Poggio, L., Greizerstein, E.J., Poggio, L., Giberti, G.C. Cytogenetic studies of Southern South-American Ilex. Caryologia. 2004;57(1):19-23.
http://dx.doi.org/10.1080/00087114.2004.10589367