Data/hora: 01/06/2024 02:39:24

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 11/10/1999
Data da última atualização: | 11/10/1999
Autoria: | FREDERICO, A. P.; RUAS, P. M.; MORALES, M. A. M.; RUAS, C. F.; NAKAJIMA, J. N.
Afiliação: | Universidade Estadual de Londrina; Universidade Estadual Paulista; Universidade Federal de Uberaba, MG.
Título: | Chromosome studies in some Stevia Cav. (Compositae) species from Southern Brazil
Ano de publicação: | 1996
Fonte/Imprenta: | Brazilian Journal of Genetics, v.19, n.4, p.605-609, 1996
Idioma: | Inglês
Conteúdo: | Karyotypes of six species of the genus Stevia from Southern Brazil were studied, utilizing root tip metaphases. All species were diploid with 2n = 22 chromosomes. It was possible to identify each species by chromosome morphology. The basic chromosome number for Brazilian species of Stevia is X = 11. This number is also found in almost all South American species. We suggest that in Stevia there is an evolutionary trend toward chromosomal rearrangement, caused mainly by pericentric inversions. It was found that, in addition to aneuploidy and polyploidy, chromosomal rearrangements are common in the tribe eupatorieae.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (17357-1) - ADD - SP - -- - S11518 -  - S11518 - DIS