Genetic Mapping and QTL Analysis of Flour Color and Milling Yield Related Traits Using Recombinant Inbred Lines in Hard Red Spring Wheat
نویسندگان
چکیده
Wheat (Triticum aestivum L.) fl our ash content and color are very important properties of fl our quality, because they greatly affect the quality of the fi nal product. Quantitative trait loci (QTL) infl uencing fl our 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 fi eld environments. Twenty-eight QTL infl uenced fl our color and milling properties and were mapped on 11 wheat chromosomes. Quantitative trait loci clusters were identifi ed 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 fi ve QTL infl uencing multiple traits. These six QTL clusters explained a substantial variation in fl our 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. T.J. Tsilo and J.A. Anderson, Dep. of Agronomy and Plant Genetics, 411 Borlaug Hall, Univ. of Minnesota, St. Paul, MN 55108; G.A. Hareland, USDA-ARS, Wheat Quality Lab., Fargo, ND 58105; S. Chao, USDA-ARS, Biosciences Research Lab., Fargo, ND 58105. Received 10 Dec. 2009. *Corresponding author ([email protected]). Abbreviations: a*, greenness (red-green chromaticity); b*, yellowness; DArT, Diversity Arrays Technology; G × E, genotype × environment; L*, brightness; LOD, logarithm of the odds; RIL, recombinant inbred line; QTL, quantitative trait loci; SSR, simple sequence repeat; YPC, yellow pigment content. Published in Crop Sci. 51:237–246 (2011). doi: 10.2135/cropsci2009.12.0711 Published online 23 Nov. 2010. © Crop Science Society of America | 5585 Guilford Rd., Madison, WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.
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