Spanish barley landraces outperform modern cultivars at low-productivity sites

Autor: José Luis Molina-Cano, Francisco J. Ciudad, Ernesto Igartua, Samia Yahiaoui, Marian Moralejo, Blanca Medina, J. L. Montoya, Ana M. Casas, J. M. Lasa, M. P. Gracia, Alfonso Cuesta-Marcos
Rok vydání: 2014
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
Repositorio Abierto de la UdL
Universitad de Lleida
Recercat. Dipósit de la Recerca de Catalunya
ISSN: 0179-9541
1439-0523
DOI: 10.1111/pbr.12148
Popis: 31 Pags.- 3 Tabls.- 2 Figs.- Additional Supporting Information may be found in the online version of this article (1 Fig., 4 Tabls.). The definitive version is available at: http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1439-0523
Barley landraces from the western Mediterranean area have not been thoroughly exploited by modern breeding. This study aims at assessing the agronomic value of a core collection of lines derived from landraces of Spanish origin and to compare them with sets of successful old and modern cultivars. The agronomic performance of a set of 175 barley genotypes, comprising 159 landrace-derived lines and 26 cultivars, was evaluated in a series of 10 field trials, carried out over 3 years and several locations. The most relevant trait of the landraces was higher grain yield at low production sites than cultivars, which may be related with better ability to fill the grain under stressful conditions. On the other hand, lateness, excessive plant height and lodging were negative traits frequently found in the landraces. Large genotype-by-environment interaction (GEI) for grain yield was detected, related partly with differences between germplasm groups, probably indicating local adaptation. GEI was also associated with the interaction of heading time and powdery mildew resistance with temperature.
This research was funded by project RTA01-088-C3, granted by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentación (INIA), of the Spanish Ministry of Science and Technology, and co-funded by the European Regional Development Fund, and by the Aragon regional government, through the funding of research group A06. Samia Yahiaoui was supported by a scholarship from the Agencia Española de Cooperación Internacional (AECI), of the Spanish Ministry of Foreign Affairs.
Databáze: OpenAIRE
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