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Biologia




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Volume 65, Issue 5

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Karyotype, meiotic behavior and pollen features of Senna occidentalis

Kátia Ferreira / Giovana Torres / Saulo Sousa
  • Departamento de Biologia, Universidade Federal de Juiz de Fora, Instituto de Ciências Biológicas, CEP: 36036-900, Juiz de Fora, Minas Gerais, Brazil
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/ Aparecida Santos
  • Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Prç. Dom Helvécio, no. 74, Dom Bosco, CEP: 36.300-000, São João del-Rei, Minas Gerais, Brazil
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Published Online: 2010-08-12 | DOI: https://doi.org/10.2478/s11756-010-0080-0

Abstract

Meiotic behavior, pollen morphology, interphasic nucleus pattern and karyotype description for Senna occidentalis (Caesalpinioideae — Fabaceae) are presented. The species had non-reticulate interphasic nucleus and homogeneous chromosome condensing with minute distal late-condensing portions in prometaphase. In mitotic metaphase, chromosome number was 2n = 28 (9 m + 5 sm), with secondary constriction in one chromosome pair. Detection of four nucleoli indicated existence of two chromosome pairs bearing Nucleolar Organizer Region (NOR). Meiotic behavior was regular, with high meiotic index (95%). Pollen grains, classified as polar/spheroidal, presented 90% viability.

Keywords: Senna; cytogenetics; chromosome; medicinal plants; palynology

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About the article

Published Online: 2010-08-12

Published in Print: 2010-10-01


Citation Information: Biologia, Volume 65, Issue 5, Pages 789–795, ISSN (Online) 1336-9563, ISSN (Print) 0006-3088, DOI: https://doi.org/10.2478/s11756-010-0080-0.

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© 2010 Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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