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    Genetic control of wheat quality: Interactions between chromosomal regions determining protein content and composition, dough rheology, and sponge and dough baking properties

    Access Status
    Fulltext not available
    Authors
    Mann, G.
    Diffey, Simon
    Cullis, B.
    Azanza, F.
    Martin, D.
    Kelly, A.
    McIntyre, L.
    Schmidt, A.
    Ma, W.
    Nath, Z.
    Kutty, I.
    Leyne, P.
    Rampling, L.
    Quail, K.
    Morell, M.
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Mann, G. and Diffey, S. and Cullis, B. and Azanza, F. and Martin, D. and Kelly, A. and McIntyre, L. et al. 2009. Genetic control of wheat quality: Interactions between chromosomal regions determining protein content and composition, dough rheology, and sponge and dough baking properties. Theoretical and Applied Genetics. 118 (8): pp. 1519-1537.
    Source Title
    Theoretical and Applied Genetics
    DOI
    10.1007/s00122-009-1000-y
    ISSN
    0040-5752
    School
    Centre for Crop Disease Management
    URI
    http://hdl.handle.net/20.500.11937/30555
    Collection
    • Curtin Research Publications
    Abstract

    While the genetic control of wheat processing characteristics such as dough rheology is well understood, limited information is available concerning the genetic control of baking parameters, particularly sponge and dough (S&D) baking. In this study, a quantitative trait loci (QTL) analysis was performed using a population of doubled haploid lines derived from a cross between Australian cultivars Kukri × Janz grown at sites across different Australian wheat production zones (Queensland in 2001 and 2002 and Southern and Northern New South Wales in 2003) in order to examine the genetic control of protein content, protein expression, dough rheology and sponge and dough baking performance. The study highlighted the inconsistent genetic control of protein content across the test sites, with only two loci (3A and 7A) showing QTL at three of the five sites. Dough rheology QTL were highly consistent across the 5 sites, with major effects associated with the Glu-B1 and Glu-D1 loci. The Glu-D1 5 + 10 allele had consistent effects on S&D properties across sites; however, there was no evidence for a positive effect of the high dough strength Glu-B1-al allele at Glu-B1. A second locus on 5D had positive effects on S&D baking at three of five sites. This study demonstrated that dough rheology measurements were poor predictors of S&D quality. In the absence of robust predictive tests, high heritability values for S&D demonstrate that direct selection is the current best option for achieving genetic gain in this product category. © 2009 Springer-Verlag.

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