QTL analysis of an intervarietal set of substitution lines in Brassica napus: (i) Seed oil content and fatty acid composition.
Heredity (Edinb)
; 90(1): 39-48, 2003 Jan.
Article
em En
| MEDLINE
| ID: mdl-12522424
ABSTRACT
Backcross breeding with marker-assisted selection was used to construct an intervarietal set of part chromosome substitution lines in Brassica napus, formed from a cross between two winter varieties of oilseed rape Tapidor and Victor. A total of 22 lines from this substitution library were examined over a 3-year period, in a total of nine field trials, for seed oil fatty acid composition and seed oil content. Trialing of the substitution lines gave evidence for the existence of 13 quantitative trait loci (QTL). All 13 QTL affected fatty acid composition of the seed, and were distributed among linkage groups 1, 3, 6, 7, 8, 11, 13, 14, 18, and 19. Seven of these QTL, on linkage groups 3, 6, 8, 13, 14, 18, and 19, also affected total seed oil content. The positions of these QTL are compared to those in the published literature and with respect to erucic acid QTL previously identified in a backcross population of the same cross. The substitution line approach gives increased precision and sensitivity for QTL mapping compared to other methods.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Óleos de Plantas
/
Brassica napus
/
Locos de Características Quantitativas
/
Ácidos Graxos
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Heredity (Edinb)
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Reino Unido