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Título

Genetics of resistance to the pink stem borer (Sesamia nonagrioides) in maize (Zea mays)

Autor Butrón Gómez, Ana María; Sandoya Miranda, Germán; Revilla Temiño, Pedro; Malvar Pintos, Rosa Ana
Palabras clave Epistasis
Genetic resistance
Maize
Sesamia nonagrioides
Zea mays
Fecha de publicación abr-2009
EditorJohn Wiley & Sons
Citación Annals of Applied Biology 154(2): 205-217 (2009)
ResumenOur knowledge of the genetics of resistance to the pink stem borer (Sesamia nonagrioides) in maize (Zea mays) is restricted to a few crosses among maize inbreds. The objectives of this study were to enlarge our understanding of the genetics of traits related to damage by pink stem borer and yield under infestation and to use generation means analyses to compare per se and testcross performance for detecting epistatic effects. All generations, either per se or crossed to testers, were evaluated in a 10 × 10 triple lattice design under artificial infestation with S. nonagrioides in 2005 and 2006. Most traits fit an additive–dominance model; but evidence for epistasis for resistance and yield under infestation was shown. Epistasis, in general, did not appear to play an important role in the inheritance of yield under pink stem borer infestation. However, the epistasis contribution to maize yield performance could be important in some outstanding crosses such as EP42 × A637. Testcross generation means revealed epistatic effects undetected by the generation means analysis, but neither method was able to eliminate dominance effects that could prevail over epistatic effects.
Versión del editorhttp://dx.doi.org/10.1111/j.1744-7348.2008.00284.x
URI http://hdl.handle.net/10261/102252
DOI10.1111/j.1744-7348.2008.00284.x
ISSN0003-4746
E-ISSN1744-7348
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