Association mapping for phenological, morphological, and quality traits in canola quality winter rapeseed (Brassica napus L.).
Genome
; 53(11): 899-907, 2010 Nov.
Article
en En
| MEDLINE
| ID: mdl-21076505
ABSTRACT
QTL mapping by association analysis has recently gained interest in plant breeding research as an alternative to QTL mapping in segregating populations from biparental crosses. In a first experiment on whole-genome association analysis in rapeseed, 684 mapped AFLP markers were tested for association with 14 traits in a set of 84 canola quality winter rapeseed cultivars. For association analysis a general linear model was used. By testing significance of marker-trait associations against a false discovery rate of 0.2, between 1 and 34 associated markers were found for 10 of the 14 traits. Taking into account linkage disequilibrium between the significant markers, these markers represent between 1 and 22 putative QTL for the respective traits. The minimum phenotypic variance explained by the QTL for the different traits ranged from 15% to 53%. A subset of 27 markers were significantly associated with two or more traits. These markers were predominantly shared between traits that were significantly correlated at the phenotypic level. The results show clearly that in rapeseed, QTL mapping by association analysis is a viable alternative to QTL mapping in segregating populations.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Brassica napus
/
Sitios de Carácter Cuantitativo
/
Estudio de Asociación del Genoma Completo
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Genome
Asunto de la revista:
GENETICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Alemania