A new polyploid of "Blechnum occidentale" (Blechnaceae-Polypodiopsida) for the northwest of Argentina

  • Graciela E. González Departamento de Ecología, Genética y Evolución (LACYE), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (Argentina)
  • Carmen Prada Departamento de Biología Vegetal I, Facultad de Ciencias Biológicas, Universidad Complutense, Ciudad Universitaria, 28040 Madrid (España)
  • Cristina H. Rolleri 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, B1904 DZB, La Plata (Argentina)
DOI: https://doi.org/10.5209/BOCM.53199
Keywords: hexaploid fern, chromosome number, sporangial characters.

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.

Downloads

Download data is not yet available.
View citations

Article download

Crossmark

Metrics

Published
2016-07-14
How to Cite
González G. E., Prada C. y Rolleri C. H. (2016). A new polyploid of "Blechnum occidentale" (Blechnaceae-Polypodiopsida) for the northwest of Argentina. Botanica Complutensis, 40, 53-61. https://doi.org/10.5209/BOCM.53199
Issue
Vol. 40 (2016)
Section
Articles

License

In order to support the global exchange of knowledge, the journal Botanica Complutensis is allowing unrestricted access to its content as from its publication in this electronic edition, and as such it is an open-access journal. The originals published in this journal are the property of the Complutense University of Madrid and any reproduction thereof in full or in part must cite the source. All content is distributed under a Creative Commons Attribution 4.0 use and distribution licence (CC BY 4.0). This circumstance must be expressly stated in these terms where necessary. You can view the summary and the complete legal text of the licence.