Nuclear DNA content and karyotype of Rosewood (Aniba rosaeodora)

• Autor(a) principal: Contim, Luis Antônio Serrão
• Data de Publicação: 2005
• Outros Autores: Carvalho, Carlos Roberto de, Martins, Franciele Alline, Freitas, Danival Vieira de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://dx.doi.org/10.1590/S1415-47572005000500017; http://locus.ufv.br//handle/123456789/25967
• topic: Rosewood; Aniba rosaeodora; Lauraceae; Karyotype; Flow cytometry

Rosewood (Aniba rosaeodora Ducke, Lauraceae) is ecologically and economically important to the Amazon region. As a consequence of its economic importance, rosewood populations have been decimated in the Amazon forest. Species of nine genera of the Lauraceae family have characterized karyotypes with n = x = 12 chromosomes in the gametophytic phase but the genus Aniba is one of the least studied Lauraceae genera with a previously undescribed genome. We used cytogenetic techniques to determine that the A. rosaeodora karyotype contained 12 pairs (2n = 24) of relatively small submetacentric chromosomes with lengths ranging from 1.34 to 2.25 mm and a nucleolar organizer region (NOR) in the short arm of chromosome 7. Flow cytometry gave 2C = 2.32 pg of DNA, equivalent to approximately 2.24 x 109 base pairs.