Data/hora: 10/06/2024 10:55:07

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 06/04/1994
Data da última atualização: | 06/04/1994
Autoria: | FAURE, S.; BAKRY, F.; GONZALEZ DE LEON, D.
Título: | Cytogenetic studies of diploid bananas.
Ano de publicação: | 1992
Fonte/Imprenta: | Montpellier, France: CIRAD-FLHOR, 1992.
Páginas: | p.77-92.
ISBN: | 2-87614-108-6
Idioma: | Inglês
Notas: | GANRY, J. Breeding banana and plantain for resistance to disease and pests. Montepellier France: CIRAD-FLOR, 1992. Proceedings of the International Symposium on Genetic Improvement of banana for Resistance...
Conteúdo: | Several authors have described the structural abnormalities in chromosomes of diploid banana cultivars. The parthenocarpic clones are often heterozygous for one or several traslocations or inversions. These structural rearrajements affect clone fertility. Knowledge of the diploid cytogenetic estructure is therefore essential for a breeding programme. Observations on 3 wild Musa acuminata individuals and 10 parthenocarpic diploid  cultivars are reported. They aim to determine the nature of structural rearrangement (translocation or inversion) and level of structural heterozygosity in the diploid  parents used in the CIRAD-IRFA banana breeding programme. All diploid cultivars showed a certain degree of structural heterozygosity but is was not strictly related to fertility. Sterility in diploid clones does not necessarily result from structural heterozygosity and can also be induced by genes.
Palavras-Chave: | congresso.
Thesagro: | Melhoramento; Musa sp.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (10141-1) - ADD - LV - -- - 634.7720601 - G198b -  - DIS