Chromosome numbers and the systematics of tribe Vochysieae (Vochysiaceae)
| Autor: | Andréa Rodrigues Barbosa, Eliana Regina Forni-Martins, Gustavo Hiroaki Shimizu, Julia Yamagishi-Costa, Kikyo Yamamoto |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Paraphyly Systematics Neotropics Zoology Plant Science Tribe (biology) 010603 evolutionary biology 01 natural sciences Qualea Vochysiaceae lcsh:Botany Callisthene Cytotaxonomy biology Phylogenetic tree Myrtales Vochysia Salvertia biology.organism_classification lcsh:QK1-989 Taxon 010606 plant biology & botany |
| Zdroj: | Acta Botânica Brasílica, Vol 32, Iss 2, Pp 314-320 Acta Botanica Brasilica, Volume: 32, Issue: 2, Pages: 314-320, Published: JUN 2018 Acta Botanica Brasilica v.32 n.2 2018 Acta Botanica Brasilica Sociedade Botânica do Brasil (SBB) instacron:SBB |
| ISSN: | 1677-941X 0102-3306 |
| DOI: | 10.1590/0102-33062017abb0354 |
| Popis: | With five neotropical genera and ca. 220 species, Vochysieae is the largest tribe of Vochysiaceae, comprising more than 90 % of its species. Preliminary phylogenetic analyses with matK sequence data indicated that Vochysieae may be paraphyletic, separated into the clades QRC (Qualea, Ruizterania and Callisthene) and VS (Vochysia, Salvertia). Whether the genera and the infrageneric taxa are artificial is still controversial. In this study, we analyzed the distribution of chromosome numbers in mitotic or meiotic cells among 20 species belonging to the genera Callisthene, Qualea, Salvertia, and Vochysia, that are native and common in Central and Southeast Brazilian forests or savannas. Species of Callisthene and Qualea possessed 2n = 22, while species of Salvertia and Vochysia had 2n = 24 (or n = 12). These chromosome numbers corroborate the recognition of two groups, and also suggest that chromosome evolution based on numerical variation is conservative in these lineages. |
| Databáze: | OpenAIRE |
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