Data/hora: 14/06/2024 05:04:42

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 17/07/1995
Data da última atualização: | 17/07/1995
Autoria: | JENNY, C.; AUBOIRON, E.
Título: | Breeding strategies and objectives
Ano de publicação: | 1994
Fonte/Imprenta: | Montpellier, France: INIBAP, 1994
Páginas: | p.31-32
Idioma: | Inglês
Notas: | In: Meeting of the Musa Breedres Network, 1, 1994, La Lima, Honduras
Conteúdo: | The objectives of the Musa genetic improvement program at CRBP are twofold. First of all, the proposed crop improvement conecrns pest and disease resistance, with particular focus on black leaf streak/black Sigatoka resistance. Secondly, CRBP aims at creating plantain-type hybrids for the local food markets and small western and central African farmers. The reasons for such choices are dictated by the economic realities of the region. This situation largely accounts for the increase in land clearing in Africa, worsened by farmers need to frequently change plots as soon as agronomic constraints and pests and diseases become significant. In order to reduce these constraints, genetic improvement has a role to play by putting new varieties that are resistant to major diseases at the farmers' disposal. This will then enhance sustainable cultivation, decrease pesticide use, and hence contribute to the presenvation of the environment. At present, the CRBP program is mainly concerned with traditional methods of improvement using conventional 3x X 2x hybridization. The medium-term objective is the creation of tetraploid hybrids by interploid crosses between a triploid variety used as female parent, and a wild Musa acuminata or an AA cultivar as male parent. Some triploid plantain cultivars show residual female fertility, and are capable of producing nonreduced female gametes (2n = 3x = 33). This is the case for plantain and the Pacific cooking banana.
Palavras-Chave: | Hibridos.
Thesagro: | Resistência.
Thesaurus Nal: | Musa.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (13658-1) - ADP - PL - -- - 634.7720601 - M494p - 1995000057 - DIS