Heterotic relationships among European maize inbreds |
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| Authors: | P Revilla RA Malvar ME Cartea P Soengas A Ordás |
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| Institution: | (1) Misión Biológica de Galicia, CSIC, Apartado 28, E-36080 Pontevedra, Spain |
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| Abstract: | European flint maize (Zea mays L.)cannot be considered an uniform group of germplasm based on its origin and area of adaptation. However, maize breeders
have not taken full advantage of the variability within the European flint germplasm. The objective of this work was to study
the heterotic relationships among European maize inbreds from different origins. Nine European flint inbreds were crossed
in a diallel that was evaluated in three environments in northwestern Spain. The variability within the European flint germplasm
and the agronomic value of some inbreds could be utilized for maize breeding programs as an alternative to the systematic
introduction of U.S. dent germplasm that is narrowing the germplasm base of breeding programs even in places where it is poorly
adapted. Some European flint inbreds may also be valuable sources of earliness (F7 and EP42), resistance to root lodging (EA1070),
and yield (EP42).These results suggest that, within the European flint germplasm, there could be some heterotic patterns,
such as ‘north-central Europe × southern Europe’, which could provide an alternative to the heterotic pattern ‘European flint
× U.S. dent’.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | combining ability European flint maize Zea mays |
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