Genetic Mapping and QTL Analysis of Flour Color and Milling Yield Related Traits Using Recombinant Inbred Lines in Hard Red Spring Wheat

• Published in: Crop science Vol. 51; no. 1; pp. 237 - 246
• Main Authors: Tsilo, Toi J, Hareland, Gary A, Chao, Shiaoman, Anderson, James A
• Format: Journal Article
• Language: English
• Published: Madison, WI The Crop Science Society of America, Inc 2011; Crop Science Society of America; American Society of Agronomy
• Subjects: Agronomy. Soil science and plant productions; ash content; baking quality; Biological and medical sciences; chromosome mapping; Chromosomes; color; diversity arrays technology markers; field experimentation; Fundamental and applied biological sciences. Psychology; Gene mapping; genetic correlation; genetic markers; genetic variation; Genetics; Genetics and breeding of economic plants; Genomics; grain yield; hard red spring wheat; inbred lines; linkage (genetics); microarray technology; microsatellite repeats; milling quality; Moisture content; molecular sequence data; Molecular weight; quantitative trait loci; Spring wheat; Triticum aestivum; wheat flour; yields; Genetic mapping; Monocotyledones; Recombination; Spring crops; Color; Flour; Cereal crop; Quantitative trait loci; Hard wheat; Gramineae; Angiospermae; Spermatophyta; Yield; Pure line; Triticum aestivum
• ISSN: 0011-183X; 1435-0653
• DOI: 10.2135/cropsci2009.12.0711

Wheat (Triticum aestivum L.) flour ash content and color are very important properties of flour quality, because they greatly affect the quality of the final product. Quantitative trait loci (QTL) influencing flour color and milling properties of hard red spring wheat were mapped on a genetic linkage map comprised of 531 simple sequence repeats (SSRs) and Diversity Arrays Technology (DArT) marker loci. Composite interval mapping with 139 recombinant inbred lines (RILs) was used to identify QTL within and across three field environments. Twenty-eight QTL influenced flour color and milling properties and were mapped on 11 wheat chromosomes. Quantitative trait loci clusters were identified on six chromosomes: 1A, 1B, 5A, 5B, 5D, and 7B. The marker Xbarc130 that is near the hardness locus on chromosome 5D was linked to five QTL influencing multiple traits. These six QTL clusters explained a substantial variation in flour color and milling properties, including those traits that were correlated. These results aid our understanding of the genetic basis of these traits. The marker loci linked to these QTL may be useful in increasing the frequency of desirable alleles during the early generations of breeding populations.