Data/hora: 21/06/2024 09:15:23

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 29/12/1993
Data da última atualização: | 29/12/1993
Autoria: | VUYLSTEKE, D.; SWENNEN, R.; ORTIZ, R.
Afiliação: | Plantain and Banana Inprovement Program, International Institute of Tropical Agriculture, Onne Station, PMB 5320, Ibadan, Nigeria.
Título: | Registration of 14 Improved Tropical Musa plantain hybrids with black sigatoka resistance
Ano de publicação: | 1993
Fonte/Imprenta: | HortScience, v,28, n.9, p.957-958, 1993.
ISSN: | 0018-5345
Idioma: | Inglês
Conteúdo: | Plantain (Musa spp., AAB group), a triploid (2n = 3x = 33) giant perennial herb, is a natural interspecific hybrid brtween the two wild species M. acuminata Colla and M. balbisiana Colla, which contributed the A and B genomes, respectively. Black sigatoka (Mycosphaeraella fijiensis Morelet), an airbone fungal leaf spot disease, is the major constraint to plantain production worldwide. The dispersion of its spores by wind and water makes plant quarantine measures inffective. The pathogen causes severe leaf necrosis in plantain, resulting in yield losses of 33% to 50% (Gauhl et al., 1993). All plantain cultivars, and some of the most popular banana cultivars of East Africa, are susceptible to black sigatoka (Swennen and Vuylsteke, 1991). Fungicides to control the disease are available, but their use is not feasible in the resource-poor smallholdings where the cropis grown in Africa. Moreover, fungicide applications pose a health hazard in village hobesteads and create an environmental risk to the fragil ecosystem of Africa's humid forest. Therefore, durable host-plant resistance is considered the most appropriate option for black sigatoka control. The International Institite of Tropical Agriculture (IITA has a mandate to develop improved germplasm of plantain and banana and to distribute it for subsequent testing and use by Africa countries. Plantain and banana are generally considered intractable in terms of genetic improvment.
Palavras-Chave: | Tetraploid.
Thesagro: | Banana; Mycosphaerella Fijiensis.
Thesaurus Nal: | breeding.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (2415-1) - ADC - AP - -- - 653.05 -  - 653.05 - DIS