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AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides x T. tauschii) as a source of favourable alleles for milling and baking quality traits.
Theor Appl Genet. 2007 Sep; 115(5):683-95.TA

Abstract

The advanced backcross QTL (AB-QTL) strategy was utilised to locate quantitative trait loci (QTLs) for baking quality traits in two BC(2)F(3) populations of winter wheat. The backcrosses are derived from two German winter wheat cultivars, Batis and Zentos, and two synthetic, hexaploid wheat accessions, Syn022 and Syn086. The synthetics originate from hybridisations of wild emmer (T. turgidum spp. dicoccoides) and T. tauschii, rather than from durum wheat and T. tauschii and thus allowed for the first time to test for exotic QTL effects on wheat genomes A and B in addition to genome D. The investigated quality traits comprised hectolitre weight, grain hardness, flour yield Type 550, falling number, grain protein content, sedimentation volume and baking volume. One hundred and forty-nine SSR markers were applied to genotype a total of 400 BC(2)F(3) lines. For QTL detection, a mixed-model ANOVA was conducted, including the effects DNA marker, BC(2)F(3) line, environment and marker x environment interaction. Overall 38 QTLs significant for a marker main effect were detected. The exotic allele improved trait performance at 14 QTLs (36.8%), while the elite genotype contributed the favourable effect at 24 QTLs (63.2%). The favourable exotic alleles were mainly associated with grain protein content, though the greatest improvement of trait performance due to the exotic alleles was achieved for the traits falling number and sedimentation volume. At the QTL on chromosome 4B the exotic allele increased the falling number by 19.6% and at the QTL on chromosome 6D the exotic allele led to an increase of the sedimentation volume by 21.7%. The results indicate that synthetic wheat derived from wild emmer x T. tauschii carries favourable QTL alleles for baking quality traits, which might be useful for breeding improved wheat varieties by marker-assisted selection.

Authors+Show Affiliations

Institute of Crop Science and Resource Conservation, Chair of Plant Breeding, University of Bonn, Katzenburgweg 5, 53115 Bonn, Germany.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17634917

Citation

Kunert, Antje, et al. "AB-QTL Analysis in Winter Wheat: I. Synthetic Hexaploid Wheat (T. Turgidum Ssp. Dicoccoides X T. Tauschii) as a Source of Favourable Alleles for Milling and Baking Quality Traits." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 115, no. 5, 2007, pp. 683-95.
Kunert A, Naz AA, Dedeck O, et al. AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides x T. tauschii) as a source of favourable alleles for milling and baking quality traits. Theor Appl Genet. 2007;115(5):683-95.
Kunert, A., Naz, A. A., Dedeck, O., Pillen, K., & Léon, J. (2007). AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides x T. tauschii) as a source of favourable alleles for milling and baking quality traits. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 115(5), 683-95.
Kunert A, et al. AB-QTL Analysis in Winter Wheat: I. Synthetic Hexaploid Wheat (T. Turgidum Ssp. Dicoccoides X T. Tauschii) as a Source of Favourable Alleles for Milling and Baking Quality Traits. Theor Appl Genet. 2007;115(5):683-95. PubMed PMID: 17634917.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - AB-QTL analysis in winter wheat: I. Synthetic hexaploid wheat (T. turgidum ssp. dicoccoides x T. tauschii) as a source of favourable alleles for milling and baking quality traits. AU - Kunert,Antje, AU - Naz,Ali Ahmad, AU - Dedeck,Oliver, AU - Pillen,Klaus, AU - Léon,Jens, Y1 - 2007/07/19/ PY - 2006/12/15/received PY - 2007/06/25/accepted PY - 2007/7/20/pubmed PY - 2008/1/10/medline PY - 2007/7/20/entrez SP - 683 EP - 95 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor. Appl. Genet. VL - 115 IS - 5 N2 - The advanced backcross QTL (AB-QTL) strategy was utilised to locate quantitative trait loci (QTLs) for baking quality traits in two BC(2)F(3) populations of winter wheat. The backcrosses are derived from two German winter wheat cultivars, Batis and Zentos, and two synthetic, hexaploid wheat accessions, Syn022 and Syn086. The synthetics originate from hybridisations of wild emmer (T. turgidum spp. dicoccoides) and T. tauschii, rather than from durum wheat and T. tauschii and thus allowed for the first time to test for exotic QTL effects on wheat genomes A and B in addition to genome D. The investigated quality traits comprised hectolitre weight, grain hardness, flour yield Type 550, falling number, grain protein content, sedimentation volume and baking volume. One hundred and forty-nine SSR markers were applied to genotype a total of 400 BC(2)F(3) lines. For QTL detection, a mixed-model ANOVA was conducted, including the effects DNA marker, BC(2)F(3) line, environment and marker x environment interaction. Overall 38 QTLs significant for a marker main effect were detected. The exotic allele improved trait performance at 14 QTLs (36.8%), while the elite genotype contributed the favourable effect at 24 QTLs (63.2%). The favourable exotic alleles were mainly associated with grain protein content, though the greatest improvement of trait performance due to the exotic alleles was achieved for the traits falling number and sedimentation volume. At the QTL on chromosome 4B the exotic allele increased the falling number by 19.6% and at the QTL on chromosome 6D the exotic allele led to an increase of the sedimentation volume by 21.7%. The results indicate that synthetic wheat derived from wild emmer x T. tauschii carries favourable QTL alleles for baking quality traits, which might be useful for breeding improved wheat varieties by marker-assisted selection. SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/17634917/AB_QTL_analysis_in_winter_wheat:_I__Synthetic_hexaploid_wheat__T__turgidum_ssp__dicoccoides_x_T__tauschii__as_a_source_of_favourable_alleles_for_milling_and_baking_quality_traits_ L2 - https://dx.doi.org/10.1007/s00122-007-0600-7 DB - PRIME DP - Unbound Medicine ER -