Data/hora: 10/06/2024 08:10:45

Provedor de dados: 	75	
País: 	Brazil	
Título: 	Reaction of faba bean genotypes to Rhizoctonia solani and resistance stability	
Autores: 	Assunção,Iraildes P; Nascimento,Liliane D; Ferreira,Mércia F; Oliveira,Francisco J; Michereff,Sami J; Lima,Gaus SA.	
Data: 	2011-12-01	
Ano: 	2011	
Palavras-chave: 	Phaseolus lunatus; Rhizoctonia canker; Genetic resistance.	
Resumo: 	The production of faba bean (Phaseolus lunatus) is limited due to the occurrence of Rhizoctonia canker, caused by the fungus Rhizoctonia solani. In order to select materials with potential for use in faba beans breeding programs and/or disease integrated management, 72 genotypes were evaluated and also stability of the disease resistance in relation to different pathogen isolates, inoculum densities and soil type. The seeds were sown in soil infested with the pathogen by the addition of colonized substrate (rice grains). The evaluation of genotypes was done after 15 days, using a note scale to discriminate the genotypes into five reaction classes. None of the 72 genotypes showed immunity to R. solani and only four genotypes (F-42, F-49, F-53 and F-58) behaved as highly resistant. The reactions presented by these genotypes varied according to the R. solani isolate, inoculum density and soil used. The genotype F-58 showed more stable resistance to pathogen isolates and inoculum densities. The genotype F-53 showed resistance stability in soils collected in different locations, remaining highly resistant in all situations. The genotype F-58 did not show high resistance to only one tested soil. Therefore, the genotypes F-58 and F-53 are promising sources of resistance to R. solani and should be indicated in areas infested by the pathogen.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000400008	
Editor: 	Associação Brasileira de Horticultura	
Relação: 	10.1590/S0102-05362011000400008	
Formato: 	text/html	
Fonte: 	Horticultura Brasileira  v.29 n.4 2011	
Fonte: 	info:eu-repo/semantics/openAccess