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Abstract:

A detailed cytological study of the spore mother cells of specimens of B. occidentale collected in locations from the northwest of the Argentina was carried out here. The results of this contribution allowed to report a new polyploid, in this case a hexaploid, whose most probably basic number was considered x = 31, and which origin is analyzed and discussed. The study suggests an allopolyploid origin of this new cytotype which would be a product of interspecific hybridization and later chromosomal duplication. In the course of the study a notable stability was observed in the sporangial characters that are considered to be diagnostic at the specific level, and independent from the ploidy.

Registro:

Documento: Artículo
Título:A new polyploid of Blechnum occidentale (Blechnaceae-Polypodiopsida) for the northwest of Argentina
Autor:González, G.E.; Prada, C.; Rolleri, C.H.
Filiación:Departamento de Ecología, Genética y Evolución (LACYE), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Departamento de Biología Vegetal I, Facultad de Ciencias Biológicas, Universidad Complutense, Ciudad Universitaria, Madrid, 28040, Spain
Laboratorio de Estudios de Anatomía Vegetal Evolutiva y Sistemática (LEAVES), Facultad de Ciencias Naturales y Museo de La Plata, 64 entre 120 y diagonal 113, DZB, La Plata, B1904, Argentina
Palabras clave:Chromosome number; Hexaploid fern; Sporangial characters
Año:2016
Volumen:40
Página de inicio:53
Página de fin:61
DOI: http://dx.doi.org/10.5209/BCOM.53199
Título revista:Botanica Complutensis
Título revista abreviado:Bot. Complutensis
ISSN:02144565
CODEN:BCOOA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02144565_v40_n_p53_Gonzalez

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Citas:

---------- APA ----------
González, G.E., Prada, C. & Rolleri, C.H. (2016) . A new polyploid of Blechnum occidentale (Blechnaceae-Polypodiopsida) for the northwest of Argentina . Botanica Complutensis, 40, 53-61.
http://dx.doi.org/10.5209/BCOM.53199
---------- CHICAGO ----------
González, G.E., Prada, C., Rolleri, C.H. "A new polyploid of Blechnum occidentale (Blechnaceae-Polypodiopsida) for the northwest of Argentina " . Botanica Complutensis 40 (2016) : 53-61.
http://dx.doi.org/10.5209/BCOM.53199
---------- MLA ----------
González, G.E., Prada, C., Rolleri, C.H. "A new polyploid of Blechnum occidentale (Blechnaceae-Polypodiopsida) for the northwest of Argentina " . Botanica Complutensis, vol. 40, 2016, pp. 53-61.
http://dx.doi.org/10.5209/BCOM.53199
---------- VANCOUVER ----------
González, G.E., Prada, C., Rolleri, C.H. A new polyploid of Blechnum occidentale (Blechnaceae-Polypodiopsida) for the northwest of Argentina . Bot. Complutensis. 2016;40:53-61.
http://dx.doi.org/10.5209/BCOM.53199