Sources of resistance to Fusarium oxysporum f. sp. cubense in banana germplasm.

Fusarium wilt (syn= Panama disease), caused by Fusarium oxysporum f. sp. cubense (FOC), is one of the most destructive diseases of banana, being genetic resistance the main management strategy for this disease. Since the pathogen is constantly evolving to supplant the genetic resistance, new sources of resistance must be investigated by genetic improvement programs aiming to developing new varieties. The objective of the present study was to identify sources of resistance from the different accessions maintained in the banana active germplasm bank (BAGB) at Embrapa Mandioca e Fruticultura. Forty-one BAGB accessions were evaluated, including 17 diploids, 21 triploids, and two tetraploids. The area under the disease progress curve, disease index, and incubation period were also evaluated. In relation to FOC resistance, there is genetic variability available among the BAGB accessions. The genotype M53 is notable for the complete resistance it expressed, and the accessions Birmanie, PA Songkla, Pirua, Imperial, Poyo, Ambei, Walebo, and Kongo FRF 1286 expressed quantitative resistance. Index terms: Musa spp., Panama disease, varieties, genetic resistance.

Détails bibliographiques

Auteurs principaux:	RIBEIRO, L. R., SILVA, S. de O. e, OLIVEIRA, S. A. S. de, AMORIM, E. P., SEREJO, J. A. dos S., HADDAD, F.
Autres auteurs:	LINDINÉIA RIOS RIBEIRO, UFRB; SEBASTIÃO DE OLIVEIRA E SILVA, UFRB; SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; EDSON PERITO AMORIM, CNPMF; JANAY ALMEIDA DOS SANTOS SEREJO, CNPMF; FERNANDO HADDAD, CNPMF.
Format:	Separatas biblioteca
Langue:	English eng
Publié:	2018-06-28
Sujets:	Banana, Resistência Genética, Musa, Varieties, Genetic resistance,
Accès en ligne:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1092878
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