Effects of different prolamin alleles on durum wheat quality properties |
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| Institution: | 1. Departamento de Tecnología de Alimentos, Universidad Politècnica de València, Spain;2. Departamento de Ingeniería de Sistemas y Automática, Universidad Politècnica de València, Spain;1. Australian Centre for Plant Functional Genomics and School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia;2. NSW Department of Primary Industries, Wagga Wagga, NSW 2650, Australia;3. Graham Centre for Agricultural Innovation, NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga, NSW 2650, Australia;1. Microbial Processes and Interactions (MiPI), Terra Research Center, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium;2. Walloon Center of Industrial Biology, University of Liège, Chemin de la Vallée 2, B40 Building, 4000 Liège, Belgium;3. CELABOR, Zoning de Petit-Rechain, Avenue du Parc 38, 4650 Herve, Belgium;4. CEWAC, Liège Science Park, Rue Bois Saint-Jean 8, 4102 Ougrée, Belgium;5. Belgian Road Research Center (BRRC), Fokkersdreef 21, 1933 Sterrebeek, Belgium |
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| Abstract: | The F4 progenies of four durum wheat crosses were used to determine the effects of different prolamin alleles on quality properties evaluated by the SDS sedimentation, mixograph, micro-alveograph and vitreousness tests and by protein content. Allelic compositions of the gliadins (Gli-B1 and Gli-2 loci) and the glutenins (Glu-1, Glu-3 and Glu-B2 loci) were determined. Alleles at the Glu-B3 locus showed a strong influence on quality measured by SDSS, mixograph and alveograph tests. Significant interactions between Glu-B3 and other glutenin loci were also detected. Prolamin composition explained more than 30% of the variation in SDSS, mixograph MT and alveograph W. The mixograph parameter BDR, and alveograph P and L parameters were the most erratic with between 8 and 76% of variation explained by prolamin composition. In general, no significant associations of prolamins with vitreousness or protein content were found. A significant correlation was detected between SDSS, MT and W. These results together with those from previous studies have important implications for wheat breeders since selection based on good alleles at Glu-B3 (a, c, j) together with favourable alleles at other loci such as Glu-A1 (subunit 1), Glu-A3 (a, c, d, h), Glu-B2 (a,b) and Gli-B1 (ω-35) could improve durum wheat quality. |
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