Artículo
Abstract:
Aiming to differentiate Turnera orientalis (2n = 6x = 30) from T. occidentalis (2n = 6x = 30), traditional and molecular cytogenetic techniques were used. Numerous hybrids were obtained from controlled crosses between T. orientalis and T. occidentalis. An analysis of their pollen viability and the failure to obtain F2 provided evidence of reproductive isolation. The present study reports for the first time the karyotype 22 metacentric + 8 submetacentric for T. occidentalis, and confirms the karyotype of T. orientalis. These species differ in a chromosome pair with secondary constriction and satellite. A FISH analysis showed six rDNA sites located on different chromosome pairs. Although the meiotic chromosome pairing of hybrids suggested a close relationship of the two species, the karyotype and mapped location of rDNA sites were different between the taxa, supporting that T. orientalis and T. occidentalis are distinct species. © Finnish Zoological and Botanical Publishing Board 2010.
Registro:
| Documento: | Artículo |
| Título: | Genomic relationships between Turnera orientalis and T occidentalis (Turneraceae) |
| Autor: | López, A.; Poggio, L.; Fernández, A. |
| Filiación: | Instituto de Botánica del Nordeste (UNNE-CONICET), CC 209 3400 Corrientes, Argentina Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Departamento de Ecología, Genética y Evolución, Lab 62, Pabellón II, 4to piso, C1428EHA, Buenos Aires, Argentina Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Av. Libertad 5450, 3400 Corrientes, Argentina |
| Palabras clave: | Allopolyploid; FISH; Fluorescent in situ hybridization; Interspecific hybrids; Turnera; Turnera occidentalis; Turnera orientalis; Turneraceae |
| Año: | 2010 |
| Volumen: | 47 |
| Número: | 6 |
| Página de inicio: | 471 |
| Página de fin: | 476 |
| DOI: | http://dx.doi.org/10.5735/085.047.0606 |
| Título revista: | Annales Botanici Fennici |
| Título revista abreviado: | Ann. Bot. Fenn. |
| ISSN: | 00033847 |
| CODEN: | ABOFA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033847_v47_n6_p471_Lopez |
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Citas:
---------- APA ----------
López, A., Poggio, L. & Fernández, A. (2010) . Genomic relationships between Turnera orientalis and T occidentalis (Turneraceae). Annales Botanici Fennici, 47(6), 471-476.http://dx.doi.org/10.5735/085.047.0606
---------- CHICAGO ----------
López, A., Poggio, L., Fernández, A. "Genomic relationships between Turnera orientalis and T occidentalis (Turneraceae)" . Annales Botanici Fennici 47, no. 6 (2010) : 471-476.http://dx.doi.org/10.5735/085.047.0606
---------- MLA ----------
López, A., Poggio, L., Fernández, A. "Genomic relationships between Turnera orientalis and T occidentalis (Turneraceae)" . Annales Botanici Fennici, vol. 47, no. 6, 2010, pp. 471-476.http://dx.doi.org/10.5735/085.047.0606
---------- VANCOUVER ----------
López, A., Poggio, L., Fernández, A. Genomic relationships between Turnera orientalis and T occidentalis (Turneraceae). Ann. Bot. Fenn. 2010;47(6):471-476.http://dx.doi.org/10.5735/085.047.0606
