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Abstract:

In this paper, cytogenetic studies and pollen grain development of Isolepis cernua (Vahl) Roem. & Schult. f. cernua (Cyperaceae) from Argentina are presented. The somatic chromosome number found is 2n= 54, being different from previous reports. Primary constrictions have not been observed, suggesting that they are holocentric chromosomes, as in many species of the family. The meiotic behaviour was described showing n= 27 and axial orientation of some of the bivalents. Three of four pollen nuclei degenerate while one of them completes the mitosis. These processes originate the pseudomonad, a characteristic feature in the Cyperaceae. This fact does not affect the pollen fertility wich is 98%. © 1999 Taylor & Francis Group, LLC.

Registro:

Documento: Artículo
Título:Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
Autor:Dopchiz, L.P.; Poggio, L.
Filiación:Institute Fitotecnico de Santa Catalina (FCAF.UNLP), Centra de Investigaciones Geneticas (UNLP-CONICET-CIC), Casilla de Correo 4-1836, Llavallol, Buenos Aires, Argentina
Departamento de Ciencias Biologicas (FCEN, UBA), Buenos Aires, 1428, Argentina
Palabras clave:Chromosome number; Cyperaceae; Isolepis cernua f. cernua; Meiotic behaviour; Pseudomonad
Año:1999
Volumen:52
Número:3-4
Página de inicio:197
Página de fin:201
DOI: http://dx.doi.org/10.1080/00087114.1998.10589173
Título revista:Caryologia
Título revista abreviado:Caryologia
ISSN:00087114
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v52_n3-4_p197_Dopchiz

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Citas:

---------- APA ----------
Dopchiz, L.P. & Poggio, L. (1999) . Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae). Caryologia, 52(3-4), 197-201.
http://dx.doi.org/10.1080/00087114.1998.10589173
---------- CHICAGO ----------
Dopchiz, L.P., Poggio, L. "Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)" . Caryologia 52, no. 3-4 (1999) : 197-201.
http://dx.doi.org/10.1080/00087114.1998.10589173
---------- MLA ----------
Dopchiz, L.P., Poggio, L. "Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)" . Caryologia, vol. 52, no. 3-4, 1999, pp. 197-201.
http://dx.doi.org/10.1080/00087114.1998.10589173
---------- VANCOUVER ----------
Dopchiz, L.P., Poggio, L. Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae). Caryologia. 1999;52(3-4):197-201.
http://dx.doi.org/10.1080/00087114.1998.10589173