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United States Department of Agriculture

Agricultural Research Service

Research Project: ENHANCE HARD SPRING AND DURUM WHEAT QUALITY AND UTILIZATION

Location: Cereal Crops Research

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

Authors
item Tsilo, Toi -
item Hareland, Gary
item Chao, Shiaoman
item Anderson, James -

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: March 17, 2010
Publication Date: January 1, 2011
Repository URL: http://hdl.handle.net/10113/48721
Citation: Tsilo, T.J., Hareland, G.A., Chao, S., Anderson, J.A. 2011. Genetic Mapping and QTL Analysis of Flour Color and Milling Yield Related Traits Using Recombinant Inbred Lines in Hard Red Spring Wheat. Crop Science. 51:237-246.

Interpretive Summary: Flour ash quantity and flour color are important properties that are used as partial measures of flour quality because of their impact on the quality of the final products. Quantitative trait loci (QTL) of hard red spring wheat were mapped on a genetic linkage map comprised of 531 simple sequence repeats (SSRs) and Diversity Array Technology (DArT) marker loci to determine the impact on flour color and milling properties. A composite interval mapping with 139 RILs was used to identify QTL within and across three field environments. Twenty-nine QTL influenced flour color and milling properties and were mapped on 11 wheat chromosomes. QTL clusters were identified on six chromosomes 1A, 1B, 5A, 5B, 5D, and 7B. The marker Xbarc130 on chromosome 5D was linked to five QTL influencing multiple traits. Results from this study provided a better understanding of the genetic basis of flour color and milling traits. The marker loci linked to these QTL may be useful in increasing the frequency of desirable alleles during early generations of breeding populations.

Technical Abstract: Wheat (Triticum aestivum L.) flour ash content and color are very important properties used to assess 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 Array Technology (DArT) marker loci. A composite interval mapping with 139 RILs was used to identify QTL within and across three field environments. Twenty-nine QTL influenced flour color and milling properties and were mapped on 11 wheat chromosomes. QTL clusters were identified on six chromosomes 1A, 1B, 5A, 5B, 5D, and 7B. The marker Xbarc130 on chromosome 5D was linked to five QTL influencing multiple traits. 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.

Last Modified: 4/23/2014
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