Cumulative and interaction effects of prolamin allelic variation and of 1BL/1RS translocation on flour quality in bread wheat |
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Authors: | P Martín JM Carrillo |
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Institution: | (1) Unidad de Genética, E.T.S. de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain |
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Abstract: | The allelic variation of prolamin loci was studied in three F2 progenies from three crosses between the 1BL/1RS cultivar Triana and Yécora Rojo, Pavón and Florence Aurora, cultivars without
the translocation. According to the 1:2:1 theoretical proportions observed in the allelic variants of the Glu-B3/Gli-B1 loci of the parent without the translocation, the inheritance as a block of the rye chromosome arm was confirmed. A group
of F3-F4 recombinant lines, developed from these crosses was evaluated using the SDS-sedimentation test and the mixograph and alveograph
tests. The presence of the 1BL/1RS translocation was not associated with significantly lower grain protein content values
or with the optimum mixing time in the mixograph of the genotypes. The effect of the 1BL/1RS translocation on most of the
quality parameters was highly dependent on the genetic pool. Significant increases in gluten strength and better mixing properties
associated with the presence of some alleles of the Glu-A1, Glu-A3/ Gli-A1 and Gli-D2 loci were detected. The additivity and the interaction of prolamin gene effects with the rye translocation in the 1BL/1RS
lines and its possible use in plant breeding are discussed.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | 1BL/1RS bread-making quality prolamins wheat-rye translocations Triticum aestivum |
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