Quantitative trait locus analysis of wheat quality traits |
| |
Authors: | James C Nelson Cristina Andreescu Flavio Breseghello Patrick L Finney Daisy G Gualberto Christine J Bergman Roberto J Peña Marie Reine Perretant Philippe Leroy Calvin O Qualset Mark E Sorrells |
| |
Institution: | (1) Department of Plant Pathology, Kansas State University, 4024 Throckmorton Hall, Manhattan, KS 66506, USA;(2) US Department of Agriculture, Agricultural Research Service, Soft Wheat Regional Quality Laboratory, Ohio Agricultural Research and Development Center, Ohio State University, 1680 Madison Ave., Wooster, OH 44691, USA;(3) Department of Plant Breeding and Genetics, Cornell University, 240 Emerson Hall, Ithaca, NY 14853, USA;(4) International Maize and Wheat Improvement Center (CIMMYT, Int.), Apartado Postal 6-641, Delegación Cuauhtémoc, 06600 Mexico, D.F. Mexico;(5) UMR 1095 INRA-UBP Amélioration & Santé des Plantes, 234 Avenue du Brézet, F-63100 Clermont-Ferrand, France;(6) Genetic Resources Conservation Program, University of California, One Shields Avenue, Davis, California, 95616-8602, U.S.A. |
| |
Abstract: | Milling and baking quality traits in wheat (Triticum aestivum L.) were studied by QTL analysis in the ITMI population, a set of 114 recombinant inbred lines (RILs) generated from a synthetic-hexaploid (W7985) × bread-wheat (Opata 85) cross. Grain from RILs grown in U.S., French, and Mexican wheat-growing regions was assayed for kernel-texture traits, protein concentration and quality, and dough strength and mixing traits. Only kernel-texture traits showed similar genetic control in all environments, with Opata ha alleles at the hardness locus Ha on chromosome arm 5DS increasing grain hardness, alkaline water retention capacity, and flour yield. Dough strength was most strongly influenced by Opata alleles at 5DS loci near or identical to Ha. Grain protein concentration was associated not with high-molecular-weight glutenin loci but most consistently with the Gli-D2 gliadin locus on chromosome arm 6DS. In Mexican-grown material, a 2DS locus near photoperiod-sensitivity gene Ppd1 accounted for 25% of variation in protein, with the ppd1-coupled allele associated with higher (1.1%) protein concentration. Mixogram traits showed most influence from chromosomal regions containing gliadin or low-molecular-weight glutenin loci on chromosome arms 1AS, 1BS, and 6DS, with the synthetic hexaploid contributing favorable alleles.Some RI lines showed quality values consistently superior to those of the parental material, suggesting the potential of further evaluating new combinations of alleles from diploid and tetraploid relatives, especially alleles of known storage proteins, for improvement of quality traits in wheat cultivars.Contribution number 06-77J from the Kansas Agricultural Experimental Station. |
| |
Keywords: | ITMI quality QTL recombinant inbred wheat |
本文献已被 SpringerLink 等数据库收录! |
|