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The effect of indirect tests for grain quality on the grain yield and industrial quality of bread wheat

Author: Trethowan, R.M.
Author: Peña-Bautista, R.J.
Author: Ginkel, M. Van.
Year: 2001
ISSN: 0179-9541
URI: http://hdl.handle.net/10883/2290
Abstract: The objective of this study was to examine the effect of selection using three indirect tests for grain quality on grain yield and dough. and baking properties. measured as alveograph strength. alveograph tenacity/extensibility ratio and loaf volume. The three tests were flour protein content. flour sedimentation and high molecular weight glutenin subunits. Of the indirect tests used for grain quality. sodium dodecyl sulphate (SDS)-sedimentation allowed the highest intensity of selection for a combined trait index of the target grain quality and grain yield characteristics. The top 48% of the material could be retained on the basis of SDS-sedimentation. resulting in retention of atleast two-thirds of the top 10% of genotypes for the combined trait index. Flour protein percentage. a weighted high molecular weight glutenin index and an index combining all the indirect tests -flour protein. SDS-sedimentation and high molecular weight glutenins -gave selection intensities of 61 %. 64% and 55%. respectively. for the combined trait index. If the objective of selection is dough strength alone, then a weighted index of all indirect traits (flour protein. SDS-sedimentation and high molecular weight glutenins) provided the highest selection intensity (26%). Other selection intensities for individual target traits were 24% for the prediction of loaf volume from flour protein. 40% for the prediction of tenacity/extensibility ratio using SDS-sedimentation and 68% for the prediction of grain yield using SDS-sedimentation.
Language: English
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Region: Global
Pages: 509-512
Journal: Plant Breeding
Journal volume: 120
Keywords: Triticum aestivum
Keywords: Wheat
Keywords: Molecular genetics
Keywords: Plant breeding
Keywords: Protein quality
Keywords: Baking
Keywords: Yields


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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