Durum wheat (Triticum durum Desf.) Mediterranean landraces as sources of variability for allelic combinations at Glu-1/Glu-3 loci affecting gluten strength and pasta cooking quality
Ver/Abrir
Fecha de publicación
2014-03-22ISSN
0925-9864
Resumen
With the aim of identifying durum wheat landraces (LR) with a potential use in breeding programs for gluten strength enhancement, the allelic combinations present at five glutenin loci were determined in a collection of 155 LR from 21 Mediterranean countries. A set of 18 modern cultivars (MC) was used for comparison. Gluten strength was determined by SDS-sedimentation test on grain samples from field experiments conducted during 3 years. A total number of 131 different allelic/banding pattern combinations were found. Taking together high (HMW-) and low (LMW-) molecular weight glutenin
subunit loci resulted in 126 combinations in LR, but only nine in MC, which are characterized for having
strong gluten. Two LMW-2 type models were identified in the collection and LMW-1 types were absent.
LMW-2 was present in 78 % of MC, including the only three with outstanding gluten strength (Ocotillo,
Claudio and Meridiano), while 14 % of the LR had LMW-2 and 6 % LMW-2-. In the LR a known
combination LMW-2 (aaa) and three new ones had a positive effect on the gluten strength. LMW-2 models were found in high frequency in LR from Italy and the three Maghreb countries; from medium to low frequencies in genotypes from Turkey, Jordan, Lebanon, Portugal and Spain, and were absent in the
remaining countries. The large variability found in LR proved their potential value in breeding to broaden the genetic basis of gluten quality improvement. Genotypes interesting for breeding purposes are identified.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
English
Materias (CDU)
575 - Genética general. Citogenética general. Inmunogenética. Evolución. Filogenia
633 - Cultivos y producciones
663/664 - Alimentos y nutrición. Enología. Aceites. Grasas
Páginas
18
Publicado por
Springer
Publicado en
Genetic Resources and Crop Evolution
Citación
Nazco, Ruyman, Roberto Javier Peña, Karim Ammar, Dolors Villegas, José Crossa, and Conxita Royo. 2014. "Durum Wheat (Triticum Durum Desf.) Mediterranean Landraces As Sources Of Variability For Allelic Combinations At Glu-1/Glu-3 Loci Affecting Gluten Strength And Pasta Cooking Quality". Genetic Resources And Crop Evolution 61 (6): 1219-1236. doi:10.1007/s10722-014-0104-7.
Número del acuerdo de la subvención
MICINN/Programa Nacional de Proyectos de Investigación Fundamental/AGL2009-11187/ES/Componentes De Tolerancia A La Sequia E Impacto En Mejora De Trigo: Bases Genetica Y Molecular Del Contenido De Chl/
MINECO/Programa Nacional de Proyectos de Investigación Fundamental/AGL-2012-37217/ES/HERRAMIENTAS PARA LA MEJORA DEL TRIGO DURO FRENTE A LOS RETOS DEL CAMBIO CLIMATICO/
Program
Cultius Extensius Sostenibles
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