Genome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines.
G3 (Bethesda)
; 13(2)2023 02 09.
Article
en En
| MEDLINE
| ID: mdl-36073937
ABSTRACT
Identification of genes associated with Striga resistance is invaluable for accelerating genetic gains in breeding for Striga resistance in maize. We conducted a genome-wide association study to identify genomic regions associated with grain yield and other agronomic traits under artificial Striga field infestation. One hundred and forty-one extra-early quality protein maize inbred lines were phenotyped for key agronomic traits. The inbred lines were also genotyped using 49,185 DArTseq markers from which 8,143 were retained for population structure analysis and genome wide-association study. Cluster analysis and population structure revealed the presence of 3 well-defined genetic groups. Using the mixed linear model, 22 SNP markers were identified to be significantly associated with grain yield, Striga damage at 10 weeks after planting, number of emerged Striga plants at 8 and 10 weeks after planting and ear aspect. The identified SNP markers would be useful for breeders for marker-assisted selection to accelerate the genetic enhancement of maize for Striga resistance in sub-Saharan Africa after validation.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Striga
/
Estudio de Asociación del Genoma Completo
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
G3 (Bethesda)
Año:
2023
Tipo del documento:
Article
País de afiliación:
Nigeria