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Contribution of autochthonous maize populations for adaptation to European conditions

AuthorsRevilla Temiño, Pedro ; Gouesnard, B.; Ordás López, Bernardo ; Boyat, A.; Álvarez Rodríguez, Ángel ; Ordás Pérez, Amando ; Malvar Pintos, Rosa Ana ; Rodríguez Graña, Víctor Manuel
Cold tolerance
European germplasm
Zea mays
Issue Date11-Aug-2006
CitationEuphytica 152(2):275-282 (2006)
AbstractEarly vigor, earliness and cold tolerance are the main potential contributions of European maize (Zea mays L.) for breeding programs for adaptation to areas with short growing seasons and cold springs. The objective of this research was to determine the potential contributions of populations from different European regions to breeding for adaptation. Six Spanish and six French maize populations differing on variability for earliness, vigor and cold tolerance were crossed in a complete diallel without reciprocals. The populations and their crosses were evaluated in the field and in a cold chamber. Minimum temperatures were the main environmental trait affecting genotype × environment interaction, probably due to the cold sensitivity of the genotypes with the best performance in the field. The best population cross, based on specific heterosis for adaptation-related traits in the field, was Viana × Rastrojero, but this cross was cold sensitive. Tuy × Lazcano should be the best choice for a breeding program for adaptation, based on performance in the field and cold tolerance. As conclusions, there was variability for earliness, vigor and cold tolerance among the populations and crosses involved in this study, being tolerant to cold conditions the populations with medium growing cycle originated in areas with short growing seasons. The highest yielding crosses were cold sensitive.
Publisher version (URL)http://dx.doi.org/10.1007/s10681-006-9214-4
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