Cytogenetics of Brazilian species of Bromeliaceae |
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Authors: | GERUZA DE OLIVEIRA CEITA JOSÉ GERALDO DE AQUINO ASSIS MARIA LENISE SILVA GUEDES ANA LÚCIA PIRES COTIAS DE OLIVEIRA |
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Institution: | Departamento de Biologia Geral, Instituto de Biologia, Universidade Federal da Bahia, Campus Universitário de Ondina, s/n, Salvador, Bahia, Brazil |
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Abstract: | This paper presents the mitotic chromosome numbers of 18 species of Bromeliaceae. The diploid number 2n = 50 was observed in Aechmea comata, A. caudata, A. correia‐araujoi, A. recurvata, A. marauensis, A. bicolor, A. pineliana, Hohenbergia catingae, H. blanchetti, Alcantarea imperialis, Al. nahoumi, Neoregelia tenebrosa, Nidularium lyman‐smithii, N. scheremetiewii, N. innocentii var. innocentii, and N. innocentii × Neoregelia johannis hybrid, whereas 2n = 34 was observed in Cryptanthus maritimus and C. warren‐loosei. All of the determinations presented in this study are previously unpublished, except A. comata and H. catingae. These results confirm x = 25 as the basic number for the family and x = 17 as a secondary basic number probably generated by decreasing dysploidy. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 158 , 189–193. |
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Keywords: | Aechmea Alcantarea chromosome numbers Cryptanthus dysploidy Hohenbergia Neoregelia Nidularium polyploidy |
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