title: Molecular genetic analysis of grain protein content and flour whiteness degree using RILs in common wheat.
abstract: Grain protein content (GPC) and flour whiteness degree (FWD) are important qualitative traits in common wheat. Quantitative trait locus (QTL) mapping for GPC and FWD was conducted using a set of 131 recombinant-inbred lines derived from the cross 'Chuan 35050 × Shannong 483' in six environmental conditions. A total of 22 putative QTLs (nine GPC and 13 FWD) were identified on 12 chromosomes with individual QTL explaining 4.5-34.0% phenotypic variation. Nine QTLs (40.9%) were detected in two or more environments. The colocated QTLs were on chromosomes 1B and 4B. Among the QTLs identified for GPC, QGpc.sdau-4A from the parent Shannong 483 represented some important favourable QTL alleles. QGpc.sdau-2A.1 and QFwd.sdau-2A.1 had a significant association with both GPC and FWD. The markers detected on top of QTL regions could be potential targets for marker-assisted selection.
authors.affiliation: Tai'an Academy of Agricultural Science, Tai'an 271000, People's Republic of China.ssli@sdau.edu.cn.
authors.forename: Xianyin
authors.initials: X
authors.lastname: Sun
authors.forename: Ke
authors.initials: K
authors.lastname: Wu
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Zhaoguo
authors.initials: Z
authors.lastname: Qian
authors.forename: Fanmei
authors.initials: F
authors.lastname: Kong
authors.forename: Ying
authors.initials: Y
authors.lastname: Guo
authors.forename: Yingying
authors.initials: Y
authors.lastname: Wang
authors.forename: Sishen
authors.initials: S
authors.lastname: Li
mesh_terms: D000483:Alleles; D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000737:chemistry*; D003116:Color; D003433:Crosses, Genetic; D002523:Edible Grain / Q000033:anatomy & histology / Q000235:genetics*; D005433:Flour / Q000032:analysis; D059647:Gene-Environment Interaction; D056726:Genetic Association Studies; D008040:Genetic Linkage; D005838:Genotype; D010641:Phenotype; D000069600:Plant Breeding; D010940:Plant Proteins / Q000235:genetics*; D040641:Quantitative Trait Loci; D014908:Triticum / Q000033:anatomy & histology / Q000235:genetics*
chemical_list: D010940:Plant Proteins