Data/hora: 09/06/2024 06:32:54

Provedor de dados: 	Bragantia	
País: 	Brazil	
Título: 	Reaction of Arabica coffee progenies derivative from Icatu to Meloidogyne paranaensis	
Autores: 	Shigueoka,Luciana Harumi; Sera,Gustavo Hiroshi; Sera,Tumoru; Fonseca,Inês Cristina de Batista; Andreazi,Elder; Carvalho,Filipe Gimenez; Carducci,Fernando Cesar; Ito,Dhalton Shiguer.	
Data: 	2016-06-01	
Ano: 	2016	
Palavras-chave: 	Coffea; Breeding; Root-knot nematode; Resistance.	
Resumo: 	ABSTRACT The aim of this study was to evaluate the reaction of Arabica coffee progenies derived from Icatu to Meloidogyne paranaensis. The experiment was conducted under screenhouse conditions at Instituto Agronômico do Paraná (IAPAR) in Londrina, Paraná State, Brazil. Seedlings with three to four pairs of leaves were inoculated with 5,000 M. paranaensis eggs and second-stage juveniles (J2). Four F4 progenies of HN 87609 derived from Icatu H4782-7-925 were evaluated. C. arabica cv. Catuaí Vermelho IAC 81 and C. arabica cv. IPR 100 were susceptible and resistant checks, respectively. The experiment was conducted in a randomized blocks design with 14 replications of one plant per plot. Assessments were performed 120 days after inoculation. The number of eggs and second-stage juveniles (J2) per gram of roots (Nematodes∙g–1) and reproduction factor (RF) were evaluated. Host susceptibility index (HSI) was used to classify the resistance levels of coffees. In relation to Nematodes∙g–1, IAPAR 12232 and IAPAR 12231 progenies were not significantly different from the resistant check IPR 100. All F4 progenies of HN 87609 were classified as highly resistant by HSI and presented 100% of plants classified as highly resistant or resistant. Therefore, these progenies are homozygously resistant to Meloidogyne paranaensis.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200193	
Editor: 	Instituto Agronômico de Campinas	
Relação: 	10.1590/1678-4499.229	
Formato: 	text/html	
Fonte: 	Bragantia  v.75 n.2 2016	
Fonte: 	info:eu-repo/semantics/openAccess