Progress in the Spanish National Barley Breeding Program
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Author
Gracia, M. P.
Mansour, E.
Casas, A. M.
Lasa, J. M.
Medina, B.
Molina-Cano, J. L.
Moralejo, M. A.
López, A.
López-Fuster, P.
Escribano, J.
Ciudad, F. J.
Codesal, P.
Montoya, J. L.
Igartua, E.
Publication date
2012-06-11ISSN
1695-971X
Abstract
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, attending to: i) the progress achieved in grain yield, and ii) the extent and impact of genotype-by-environment interaction
of grain yield. Grain yields and flowering dates of 349 advanced lines in generations F8, F9 and F10, plus checks,
tested at 163 trials over 11 years were analized. The locations are in the provinces of Albacete, Lleida, Valladolid and
Zaragoza. The data are highly unbalanced because the lines stayed at the program for a maximum of three years.
Progress was estimated using relative grain yield and mixed models (REML) to homogenize the results among years
and locations. There was evident progress in the program over the period studied, with increasing relative yields in
each generation, and with advanced lines surpassing the checks in the last two generations, although the rate of progress
was uneven across locations. The genetic gain was greater from F8 to F9 than from F9 to F10. The largest non-purely
environmental component of variance was genotype-by-location-by-year, meaning that the genotype-by-location pattern was highly unpredictable. The relationship between yield and flowering time overall was weak in the locations
under study at this advanced stage of the program. The program can be continued with the same structure, although
measures should be taken to explore the causes of slower progress at certain locations.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
633 - Field crops and their production
Pages
11
Publisher
Consejo Superior de Investigaciones Científicas
Is part of
Spanish Journal of Agricultural Research
Citation
Gracia, María Pilar Rivero, Elsayed Mansour, Ana M. Casas, J. M. Lasa, B. Médina, José Luis Molina-Cano, Marian Moralejo, et al. 2012. “Progress in the Spanish National Barley Breeding Program.” Spanish Journal of Agricultural Research 10 (3): 741. doi:10.5424/sjar/2012103-2613.
Grant agreement number
MICINN/Programa Nacional de Formación de Recursos Humanos/BES-2008-009623/ES/ /
MEC/ /AGL2007-63625/ES/LOCALIZACION Y VALIDACION DE QTL DE ADAPTACION Y RESISTENCIA A ENFERMEDADES EN CEBADA/
INIA/Programa Nacional de Formación de Recursos Humanos/RTA2009-00006-C04-01/ES/Obtención de variedades de cebada para una agricultura sostenible española/
Program
Cultius Extensius Sostenibles
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2648]
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