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2008 - 481 p.

Variability of glutenin alleles in a sample representative of the durum wheat Spanish collection

Aguiriano E., Ruiz M., Carrillo J.M.

A sample of 41 durum wheat Spanish landraces conserved at the CRF-INIA was analysed for glutenin alleles, located at five loci; Glu-A1, Glu-B1 for high molecular weight (HMW) glutenin A-subunits and Glu-A3, Glu-B3 and Glu-B2 for low molecular weight (LMW) glutenin B-subunits. Thirty-seven genotypes were found in the 41 landraces analysed. The analogous genotypes were, however, different in other glutenin subunits and in the gliadin electrophoretic patterns. Altogether 49 alleles were identified for the five loci analysed. The most frequent alleles at each locus were Glu-B1d, Glu-B2b and the allele a at Glu-A1, Glu-A3 and Glu-B3. The most polymorphic were Glu-A3 and Glu-B3, with 15 and 18 alleles, respectively. A high frequency of new alleles was found. Glu-B3 alleles linked to the gliadins ã-45 or 44 at Gli-B1, associated with good quality, had an accumulated frequency of 70.7 percent, showing that this germplasm could be a source for breeding quality.



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Aguiriano E., Ruiz M., Carrillo J.M. Variability of glutenin alleles in a sample representative of the durum wheat Spanish collection. In : Molina-Cano J.L. (ed.), Christou P. (ed.), Graner A. (ed.), Hammer K. (ed.), Jouve N. (ed.), Keller B. (ed.), Lasa J.M. (ed.), Powell W. (ed.), Royo C. (ed.), Shewry P. (ed.), Stanca A.M. (ed.). Cereal science and technology for feeding ten billion people: genomics era and beyond. Zaragoza : CIHEAM / IRTA, 2008. p. 55-57. (Options Méditerranéennes : Série A. Séminaires Méditerranéens; n. 81). Meeting of the Eucarpia Cereal Section, 2006/11/13-17, Lleida (Spain). http://om.ciheam.org/om/pdf/a81/00800803.pdf