Comportamento mitótico e meiótico de cromossomos holocêntricos &gama; irradiados de Rhynchospora pubera (Cyperaceae)

André Luís Laforga Vanzela; Waldeciro Colaço

doi:10.4025/actascibiolsci.v24i0.2364

Mitotic and meiotic behavior of &gama; irradiated holocentric chromosomes of Rhynchospora pubera (Cyperaceae)

Authors

André Luís Laforga Vanzela UEL Author
Waldeciro Colaço UFPE Author

DOI:

https://doi.org/10.4025/actascibiolsci.v24i0.2364

Keywords:

Cyperaceae, holocentric chromosomes, meiosis, mitosis, Rhynchospora

Abstract

In order to evaluate the occurrence of diffuse kinetochores in Rhynchospora (Cyperaceae), chromosomes of R. pubera were fragmented or fused by &gama; irradiation. This material was investigated in subsequent cell generations, in both mitosis and meiosis. Alterations in number and size of chromosomes were detected, but the anaphase behavior of irradiated chromosomes was normal and no micronucleus was observed. All these data point to the presence of diffuse kinetochores in R. pubera.

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Author Biography

André Luís Laforga Vanzela, UEL

Bacharel em Ciências Biológicas pela Universidade Estadual de Londrina (1991), Mestre em Genética e Biologia Molecular pela Universidade Estadual de Londrina (1994) e Doutor em Ciências Biológicas (Botânica) pela Universidade de São Paulo (1999). Atualmente é professor adjunto da Universidade Estadual de Londrina. Atua nas áreas de Genética e Botânica, com ênfase em Citogenética, Genética molecular e Citotaxonomia de plantas nativas, quando possível, relacionadas Ã restauração ambiental Currículo Lattes

Published

2008-05-13

Issue

Vol. 24 (2002)

Section

Biology Sciences

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How to Cite

Mitotic and meiotic behavior of &gama; irradiated holocentric chromosomes of Rhynchospora pubera (Cyperaceae). (2008). Acta Scientiarum. Biological Sciences, 24, 611-614. https://doi.org/10.4025/actascibiolsci.v24i0.2364