Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)

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, sugge...

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Detalles Bibliográficos
Autores principales: Dopchiz, Laura Patricia, Poggio, Lidia
Publicado: 1999
Materias:
Chromosome number
Cyperaceae
Isolepis cernua f. cernua
Meiotic behaviour
Pseudomonad
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v52_n3-4_p197_Dopchiz
http://hdl.handle.net/20.500.12110/paper_00087114_v52_n3-4_p197_Dopchiz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00087114_v52_n3-4_p197_Dopchiz
record_format dspace
spelling paper:paper_00087114_v52_n3-4_p197_Dopchiz2023-06-08T14:33:16Z Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae) Dopchiz, Laura Patricia Poggio, Lidia Chromosome number Cyperaceae Isolepis cernua f. cernua Meiotic behaviour Pseudomonad 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. Fil:Dopchiz, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Poggio, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v52_n3-4_p197_Dopchiz http://hdl.handle.net/20.500.12110/paper_00087114_v52_n3-4_p197_Dopchiz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Chromosome number
Cyperaceae
Isolepis cernua f. cernua
Meiotic behaviour
Pseudomonad
spellingShingle Chromosome number
Cyperaceae
Isolepis cernua f. cernua
Meiotic behaviour
Pseudomonad
Dopchiz, Laura Patricia
Poggio, Lidia
Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
topic_facet Chromosome number
Cyperaceae
Isolepis cernua f. cernua
Meiotic behaviour
Pseudomonad
description 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.
author Dopchiz, Laura Patricia
Poggio, Lidia
author_facet Dopchiz, Laura Patricia
Poggio, Lidia
author_sort Dopchiz, Laura Patricia
title Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
title_short Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
title_full Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
title_fullStr Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
title_full_unstemmed Meiosis and pollen grain development in Isolepis cernua F. Cernua (Cyperaceae)
title_sort meiosis and pollen grain development in isolepis cernua f. cernua (cyperaceae)
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00087114_v52_n3-4_p197_Dopchiz
http://hdl.handle.net/20.500.12110/paper_00087114_v52_n3-4_p197_Dopchiz
work_keys_str_mv AT dopchizlaurapatricia meiosisandpollengraindevelopmentinisolepiscernuafcernuacyperaceae
AT poggiolidia meiosisandpollengraindevelopmentinisolepiscernuafcernuacyperaceae
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