Título:	Linkage and mapping of quantitative trait loci associated with angular leaf spot and powdery mildew resistance in common beans.
Autoria:	BASSI, D. BRIÑEZ, B. ROSA, J. S. OBLESSUC, P. R. ALMEIDA, C. P. de NUCCI, S. M. SILVA, L. C. D. da CHIORATO, A. F. VIANELLO, R. P. CAMARGO, L. E. A. BLAIR, M. W. BENCHIMOL-REIS, L. L.
Afiliação:	DENIS BASSI, IAC; BORIS BRIÑEZ, IAC; JULIANA SANTA ROSA, IAC; PAULA RODRIGUES OBLESSUC, IAC; CALÉO PANHOCA DE ALMEIDA, IAC; STELLA MARIS NUCCI, IAC; LARISSA CHARIEL DOMINGOS DA SILVA, IAC; ALISSON FERNANDO CHIORATO, IAC; ROSANA PEREIRA VIANELLO, CNPAF; LUIS EDUARDO ARANHA CAMARGO, ESALQ; MATTHEW WOHLGEMUTH BLAIR, TENNESSEE STATE UNIVERSITY; LUCIANA LASRY BENCHIMOL-REIS, IAC.
Ano de publicação:	2017
Referência:	Genetics and Molecular Biology, Ribeirão Preto, v. 40, n. 1, p. 109-122, jan./mar. 2017.
Conteúdo:	Angular leaf spot (ALS) and powdery mildew (PWM) are two important fungi diseases causing significant yield losses in common beans. In this study, a new genetic linkage map was constructed using single sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs), in a segregating population derived from the AND 277 x SEA 5 cross, with 105 recombinant inbred lines. Phenotypic evaluations were performed in the greenhouse to identify quantitative trait loci (QTLs) associated with resistance by means of the composite interval mapping analysis. Four QTLs were identified for ALS resistance. The QTL ALS11AS, linked on the SNP BAR 5054, mapped on chromosome Pv11, showed the greatest effect (R2 = 26.5%) on ALS phenotypic variance. ForPWMresistance, two QTLs were detected, PWM2AS and PWM11AS, on Pv2 and Pv11, explaining 7% and 66% of the phenotypic variation, respectively. Both QTLs on Pv11 were mapped on the same genomic region, suggesting that it is a pleiotropic region. The present study resulted in the identification of new markers closely linked to ALS and PWM QTLs, which can be used for marker-assisted selection, fine mapping and positional cloning.
Thesagro:	Feijão Phaseolus vulgaris Mancha foliar Erysiphe Polygoni
NAL Thesaurus:	Microsatellite repeats Single nucleotide polymorphism Leaf spot
Palavras-chave:	Pseudocercospora griseola Quantitative inheritance
ISSN:	1678-4685
Digital Object Identifier:	10.1590/1678-4685-GMB-2015-0314
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAF)