Data/hora: 10/06/2024 12:24:16

Provedor de dados: 	63	
País: 	Brazil	
Título: 	Increasing the resistance of common bean to white mold through recurrent selection	
Autores: 	Leite,Monik Evelin; Dias,Juliana Andrade; Souza,Danuza Araujo de; Alves,Filipe Couto; Pinheiro,Lucas Rezende; Santos,João Bosco dos.	
Data: 	2016-02-01	
Ano: 	2016	
Palavras-chave: 	Sclerotinia sclerotiorum; Phaseolus vulgaris; Genetic resistance; Genetic progress.	
Resumo: 	ABSTRACT White mold, caused by Sclerotinea sclerotiorum (Lib.) de Bary is one of the most important diseases of the common bean (Phaseolus vulgaris L.) worldwide. Physiological resistance and traits related to disease avoidance such as architecture contribute to field resistance. The aim of this study was to verify the efficiency of recurrent selection in physiological resistance to white mold, “Carioca” grain type and upright habit in common bean. Thirteen common bean lines with partial resistance to white mold were intercrossed by means of a circulant diallel table, and seven recurrent selection cycles were obtained. Of these cycles, progenies of the S0:1, S0:2 and S0:3 generations of cycles III, IV, V and VI were evaluated. The best (8 to 10) progenies of the seven cycles were also evaluated, in two experiments, one in the greenhouse and one in the field. Lattice and/or randomized block experimental designs were used. The traits evaluated were: resistance to white mold by the straw test method, growth habit and grain type. The most resistant progenies were selected based on the average score of resistance to white mold. Subsequently, they were evaluated with regard to grain type and growth habit. Recurrent selection allowed for genetic progress of about 11 % per year for white mold resistance and about 15 % per year for the plant architecture. There was no gain among cycles for grain type. Progeny selection and recurrent selection were efficient for obtaining progenies with a high level of resistance to white mold with “Carioca” grain type and upright habit.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100071	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/0103-9016-2015-0084	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.73 n.1 2016	
Fonte: 	info:eu-repo/semantics/openAccess