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Abstract:

This paper presents the karyotype, DNA content and meiotic behaviour of five species of Vicia from Argentina (V. macrograminea Burk., V. graminea SM., V. epetiolaris Burk., V. pampicola Burk. and V. nana Vog.). All the species have the same chromosome number and karyotype formula (2n = 14; 6 m + 4 st + 4 t). Each species, however, displays a characteristic number and position of the nucleolar organizer region (NOR) and different sizes of the respective satellites, confirmed by Ag-NOR banding. Moreover, significant differences were found in the total chromosome volume (TCV) and DNA content of the species. Positive correlations between DNA content and TCV, and between DNA content and type of life cycle were also found. TCV and DNA content are lower in V. nana (annual) and higher in V. macrograminea (biennial-perennial). The material displayed marked karyotypic orthoselection, with similar karyotypes in all studied species, even when the overall chromosome size varied. Evolutionary changes in DNA amount are proportional to the relative length of each chromosome arm, maintaining karyotypic uniformity. Significant differences were found between the meiotic behaviour of V. graminea and that of the other species. V. graminea has a lower frequency of ring bivalents and chiasmata per cell, and also has a lower interstitial chiasma frequency. In general, the results are congruent with the morphological data reported for these species.

Registro:

Documento: Artículo
Título:Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)
Autor:Naranjo, C.A.; Ferrari, M.R.; Palermo, A.M.; Poggio, L.
Filiación:Instituto Fitotécnico de Santa Catalina (FCAF, UNLP), Centro de Investigaciones Genéticas (UNLP-CONICETCIC), C.C. 4, 1836 Llavallol, Buenos Aires, Argentina
Fac. Cs. Veterinarias, UBA, Buenos Aires, Argentina
CITEFA, Buenos Aires, Argentina
Departamento de Biologia, FCEN, UBA, 1428 Buenos Aires, Argentina
Palabras clave:Karyotype; Meiotic behaviour; NOR banding; Nuclear DNA content; Orthoselection; Vicia species
Año:1998
Volumen:82
Número:6
Página de inicio:757
Página de fin:764
DOI: http://dx.doi.org/10.1006/anbo.1998.0744
Título revista:Annals of Botany
Título revista abreviado:Ann. Bot.
ISSN:03057364
CODEN:ANBOA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03057364_v82_n6_p757_Naranjo.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03057364_v82_n6_p757_Naranjo

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Citas:

---------- APA ----------
Naranjo, C.A., Ferrari, M.R., Palermo, A.M. & Poggio, L. (1998) . Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae). Annals of Botany, 82(6), 757-764.
http://dx.doi.org/10.1006/anbo.1998.0744
---------- CHICAGO ----------
Naranjo, C.A., Ferrari, M.R., Palermo, A.M., Poggio, L. "Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)" . Annals of Botany 82, no. 6 (1998) : 757-764.
http://dx.doi.org/10.1006/anbo.1998.0744
---------- MLA ----------
Naranjo, C.A., Ferrari, M.R., Palermo, A.M., Poggio, L. "Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae)" . Annals of Botany, vol. 82, no. 6, 1998, pp. 757-764.
http://dx.doi.org/10.1006/anbo.1998.0744
---------- VANCOUVER ----------
Naranjo, C.A., Ferrari, M.R., Palermo, A.M., Poggio, L. Karyotype, DNA content and meiotic behaviour in five South American species of Vicia (Fabaceae). Ann. Bot. 1998;82(6):757-764.
http://dx.doi.org/10.1006/anbo.1998.0744