Quantitative trait loci for agronomic traits in an elite barley population for Mediterranean conditions
Mansour Elsayed, Elsayed
Casas Cendoya, Ana Maria
Gracia Gimeno, Ma. Pilar
Molina Cano, José Luis
Thomas, William T. B.
Igartua Arregui, Ernesto
MetadataShow full item record
Advances in plant breeding through marker-assisted selection (MAS) are only possible when genes or quantitative trait loci (QTLs) can contribute to the improvement of elite germplasm. A population of recombinant inbred lines (RILs) was developed for one of the best crosses of the Spanish National Barley Breeding Program, between two six-row winter barley cultivars Orria and Plaisant. The objective of this study was to identify favourable QTLs for agronomic traits in this population, which may help to optimise breeding strategies for these and other elite materials for the Mediterranean region. A genetic linkage map was developed for 217 RILs, using 382 single nucleotide polymorphism markers, selected from the barley oligonucleotide pool assay BOPA1 and two genes. A subset of 112 RILs was evaluated for several agronomic traits over a period of 2 years at three locations, Lleida and Zaragoza (Spain) and Fiorenzuola d’Arda (Italy), for a total of five field trials. An important segregation distortion occurred during population development in the region surrounding the VrnH1 locus. A QTL for grain yield and length of growth cycle was also found at this locus, apparently linked to a differential response of the VrnH1 alleles to temperature. A total of 33 QTLs was detected, most of them for important breeding targets such as plant height and thousand-grain weight. QTL × environment interactions were prevalent for most of the QTLs detected, although most interactions were of a quantitative nature. Therefore, QTLs suitable for MAS for most traits were identified.
Is part ofMolecular Breeding, 2014, vol. 33, núm. 2, p 249-265
European research projects
Showing items related by title, author, creator and subject.
Selection footprints in barley breeding lines detected by combining genotyping-by-sequencing with reference genome information Igartua Arregui, Ernesto; Mansour, Elsayed; Cantalapiedra, Carlos P.; Contreras‐Moreira, Bruno; Gracia Gimeno, Ma. Pilar; Fuster, Prudencio; Escribano, J.; Molina Cano, José Luis; Moralejo Vidal, Mª Angeles; Ciudad, F. J.; Thomas, William T. B.; Karsai, Ildikó; Casas Cendoya, Ana Maria (Springer, 2015)This study is a retrospective analysis of an elite cross from the Spanish National Barley Breeding Program. This was the most successful cross produced in the breeding program in the past 20 years. The progeny from this ...
Cuesta-Marcos, Alfonso; Igartua Arregui, Ernesto; Ciudad, F. J.; Codesal, P.; Russell, Joanne; Molina Cano, José Luis; Moralejo Vidal, Mª Angeles; Szűcs, Péter; Gracia Gimeno, Ma. Pilar; Lasa Dolhagaray, José Manuel; Casas Cendoya, Ana Maria (Springer Verlag, 2008)Heading date is a key trait for the adaptation of barley to Mediterranean environments. We studied the genetic control of flowering time under Northern Spanish (Mediterranean) conditions using a new population derived from ...
Gracia Gimeno, Ma. Pilar; Mansour Elsayed, Elsayed; Casas Cendoya, Ana Maria; Lasa Dolhagaray, José Manuel; Medina Abad, Blanca; Molina Cano, José Luis; Moralejo Vidal, Mª Angeles; López, Alberto; López Fuster, Prudencio; Escribano, J.; Ciudad, F. J.; Codesal, P.; Montoya, J. L.; Igartua Arregui, Ernesto (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (Espanya), 2012)The Spanish Barley Breeding Program is carried out by four public research organizations, located at the most representative barley growing regions of Spain. The aim of this study is to evaluate the program retrospectively, ...