Data/hora: 24/06/2024 13:35:27

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	10/12/2009	
Data da última atualização: 	25/02/2010	
Autoria: 	RIBEIRO, L. R.; SILVA, S. de O. e; AMORIM, E. P.; CORDEIRO, Z. J. M.; RODRIGUEZ, M. A. D.	
Afiliação: 	Lindinéia Rios Ribeiro, UFRB; SEBASTIAO DE OLIVEIRA E SILVA, CNPMF; EDSON PERITO AMORIM, CNPMF; ZILTON JOSE MACIEL CORDEIRO, CNPMF; MIGUEL ANGEL DITA RODRIGUEZ, CNPMF.	
Título: 	Early detection of resistance to Fusarium wilt in banana.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Tropical Plant Pathology, Brasília, DF, v. 34, ago. 2009. Suplemento.	
ISSN: 	1982-5676	
Idioma: 	Inglês	
Notas: 	Edição dos Resumos do XLII Congresso Brasileiro de Fitopatologia, Rio de Janeiro, ago. 2009. Suplemento. Resumo 831.	
Conteúdo: 	This work aimed to establish a screening method for Fusarium wilt resistance in banana. Two types of substrates (vermiculite and washed river sand - WRS) and three inoculum sources (conidial suspension from one-week-old colonies and Fusarium oxysporum f. sp. cubense (Foc)-colonized corn meal-sand (CMS) medium) were studied by inoculation on 'Maçã' (susceptible) plantlets. Symptoms were observed in plants grown in both substrates, but highest incidence ocurred in WRS. Low infection rates were observed by using conidial suspension from PDA-grown colonies. By contrast, inoculums from stressed colonies and CMS caused consistent infection. Using WRS as substrate and inoculum from PDA-grown stressed colonies, plantlets of 'Tropical' and 'Thap Maeo' (intermediary resistance), 'Maçã' (susceptible) and 'Grand Naine' (resistant) were challenged. While the incubation period in 'Maçã' was 13 days after inoculation (dai), in 'tropical' and 'Thap Maeo' initial symptoms were observed at 17 dai. Disease progress also allowed discriminate the cultivars according to the resistance levels. Our results suggest that the procedures here described are suitable for early detection of foc resistance in banana.	
Thesagro: 	Doença de Planta.	
Categoria do assunto: 	S Ciências Biológicas	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
Exemplares: 	CNPMF - (26348-1) - UPC - AP - PP -  -  -  - PCT