title: Identification of milling and baking quality QTL in multiple soft wheat mapping populations.
abstract: Two mapping approaches were use to identify and validate milling and baking quality QTL in soft wheat. Two LG were consistently found important for multiple traits and we recommend the use marker-assisted selection on specific markers reported here. Wheat-derived food products require a range of characteristics. Identification and understanding of the genetic components controlling end-use quality of wheat is important for crop improvement. We assessed the underlying genetics controlling specific milling and baking quality parameters of soft wheat including flour yield, softness equivalent, flour protein, sucrose, sodium carbonate, water absorption and lactic acid, solvent retention capacities in a diversity panel and five bi-parental mapping populations. The populations were genotyped with SSR and DArT markers, with markers specific for the 1BL.1RS translocation and sucrose synthase gene. Association analysis and composite interval mapping were performed to identify quantitative trait loci (QTL). High heritability was observed for each of the traits evaluated, trait correlations were consistent over populations, and transgressive segregants were common in all bi-parental populations. A total of 26 regions were identified as potential QTL in the diversity panel and 74 QTL were identified across all five bi-parental mapping populations. Collinearity of QTL from chromosomes 1B and 2B was observed across mapping populations and was consistent with results from the association analysis in the diversity panel. Multiple regression analysis showed the importance of the two 1B and 2B regions and marker-assisted selection for the favorable alleles at these regions should improve quality.
authors.affiliation: Department of Horticulture and Crop Science, The Ohio State University and the Ohio Agriculture Research and Development Center, 1680 Madison Ave, Wooster, OH, 44691, USA. cabrera.16@buckeyemail.osu.edu.
authors.forename: Antonio
authors.initials: A
authors.lastname: Cabrera
authors.affiliation: Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Kein Hall, Lincoln, NE, 68583-0915, USA.
authors.forename: Mary
authors.initials: M
authors.lastname: Guttieri
authors.affiliation: BHN Research, P. O. Box 3267, Immokalee, FL, 34143, USA.
authors.forename: Nathan
authors.initials: N
authors.lastname: Smith
authors.affiliation: Bayer Crop Science LP, 202 Keim Hall, Lincoln, NE, USA.
authors.forename: Edward
authors.initials: E
authors.lastname: Souza
authors.affiliation: Soft Wheat Quality Laboratory, USDA Agricultural Research Service, Wooster, OH, 44691, USA.
authors.forename: Anne
authors.initials: A
authors.lastname: Sturbaum
authors.affiliation: Department of Horticulture and Crop Science, The Ohio State University and the Ohio Agriculture Research and Development Center, 1680 Madison Ave, Wooster, OH, 44691, USA.
authors.forename: Duc
authors.initials: D
authors.lastname: Hua
authors.affiliation: Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute, State University, Blacksburg, VA, 24061, USA.
authors.forename: Carl
authors.initials: C
authors.lastname: Griffey
authors.affiliation: Limagrain Cereal Seeds LLC, 6414 N Sheridian, Wichita, KS, 67204, USA.
authors.forename: Marla
authors.initials: M
authors.lastname: Barnett
authors.affiliation: Department of Crop Science, North Carolina State University, Campus Box 7620, Raleigh, NC, 27695-7620, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Murphy
authors.affiliation: Department of Agronomy, Purdue University, 915 West State Street, West Lafayette, IN, 47907, USA.
authors.forename: Herb
authors.initials: H
authors.lastname: Ohm
authors.affiliation: Pioneer HiBreed International, INC., Windfall, IN, USA.
authors.forename: Jim
authors.initials: J
authors.lastname: Uphaus
authors.affiliation: Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY, 14853, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Sorrells
authors.affiliation: DuPont Pioneer Hi Bred International Inc, Des Moines, IA, 50316, USA.
authors.forename: Elliot
authors.initials: E
authors.lastname: Heffner
authors.affiliation: USDA-ARS, North Carolina State University, Raleigh, NC, 27695, USA.
authors.forename: Gina
authors.initials: G
authors.lastname: Brown-Guedira
authors.affiliation: Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, 40546, USA.
authors.forename: David
authors.initials: D
authors.lastname: Van Sanford
authors.affiliation: Department of Horticulture and Crop Science, The Ohio State University and the Ohio Agriculture Research and Development Center, 1680 Madison Ave, Wooster, OH, 44691, USA. sneller.5@osu.edu.
authors.forename: Clay
authors.initials: C
authors.lastname: Sneller
mesh_terms: D000483:Alleles; D002874:Chromosome Mapping / Q000379:methods*; D032461:Chromosomes, Plant; D018744:DNA, Plant / Q000235:genetics; D005433:Flour; D063427:Food Quality; D056726:Genetic Association Studies; D005819:Genetic Markers; D005828:Genetics, Population; D005838:Genotype; D016014:Linear Models; D008957:Models, Genetic; D010641:Phenotype; D040641:Quantitative Trait Loci; D014908:Triticum / Q000235:genetics*
chemical_list: D018744:DNA, Plant; D005819:Genetic Markers