Cytogenetics and cytotaxonomy of Velloziaceae.
| dc.contributor | NATONIEL FRANKLIN DE MELO, CPATSA | |
| dc.contributor | MARCELO GUERRA, UNIVERSIDADE FEDERAL DE PERNAMBUCO | |
| dc.contributor | ANA MARIA BENKO-ISEPPON, UNIVERSIDADE FEDERAL DE PERNAMBUCO | |
| dc.contributor | NANUZA LUIZA DE MENEZES, UNIVERSIDADE DE SÃO PAULO. | |
| dc.creator | MELO, N. F. de | |
| dc.creator | GUERRA, M. | |
| dc.creator | BENKO-ISEPPON, A. M. | |
| dc.creator | MENEZES, N. L. de | |
| dc.date | 2018-05-01T01:03:30Z | |
| dc.date | 2018-05-01T01:03:30Z | |
| dc.date | 1997-08-27 | |
| dc.date | 1997 | |
| dc.date | 2018-05-01T01:03:30Z | |
| dc.date.accessioned | 2026-07-07T05:49:07Z | |
| dc.description | Chromosome number and other cytological features are reported from 35 species of Velloziaceae, including several african and brazilian populations. All analyzed species show areticulate interphase nuclei and prophase/prometaphase chromosomes with proximal early condensation. Most heteropycnotic blocks do not seem to correspond to heterochromatin since, at least in Vellozia patens, they do not stain differentially after C-banding procedures. Regarding the chromosome number, three main groups could be identified. The first comprised diploid species of the genera Nanuza, Vellozia and the brazilian species of Xerophyta with 2n=14 or 16; the second comprised tetraploid species with 2n=34, and included all brazilian species of subfam. Barbacenioideae; the third group, of hexaploid species, comprised the African representatives of the genus Xerophyta. A single population of Vellozia, possibly of hybrid origin, had 2n~=32. A basic number of x=8 is proposed for the family. The karyological information supports the hypothesis that the Velloziaceae originated on the South American, rather than on the African continent. | |
| dc.identifier | Plant Systematics and Evolution, v. 204, p. 257-273, 1997. | |
| dc.identifier | http://www.alice.cnptia.embrapa.br/alice/handle/doc/132531 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/500528 | |
| dc.language | eng | |
| dc.rights | openAccess | |
| dc.subject | Cytotaxonomy | |
| dc.subject | Heterochromation | |
| dc.subject | Citotaxonomia | |
| dc.subject | Cromossoma | |
| dc.subject | Velloziaceae | |
| dc.subject | chromosomes | |
| dc.title | Cytogenetics and cytotaxonomy of Velloziaceae. | |
| dc.type | Artigo de periódico |