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- Title
Karyotype analysis in South American species of Myrtaceae.
- Authors
DA COSTA, ITAYGUARA RIBEIRO; FORNI-MARTINS, ELIANA R.
- Abstract
In Myrtaceae (Myrteae), the diploid chromosome number 2 n = 2 x = 22 is the most common, although variations of ploidy level occur, with some triploid (2 n = 3 x = 33) and tetraploid (2 n = 4 x = 44) records. Karyotype details in this group are scarce because the chromosomes are small (< 2 μm). In this work, we carried out a karyotypic analysis of 15 species of Myrtaceae grouped in different subtribes and genera. Measurements of chromosome length (long arm, L; short arm, S) were taken and several karyotypic parameters were calculated for each species. The karyotypes in fleshy-fruited taxa (Myrteae) were more varied than in the other previously analysed dry-fruited group ( Eucalyptus, Eucalypteae), in which the chromosomes were exclusively metacentric. © 2007 The Linnean Society of London, Botanical Journal of the Linnean Society, 2007, 155, 571–580.
- Subjects
PLOIDY; CYTOTAXONOMY; POLYPLOIDY; KARYOTYPES; CELL nuclei; GENETICS
- Publication
Botanical Journal of the Linnean Society, 2007, Vol 155, Issue 4, p571
- ISSN
0024-4074
- Publication type
Article
- DOI
10.1111/j.1095-8339.2007.00704.x