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Título

Indirect response to selection for improving resistance to the Mediterranean corn borer (Sesamia nonagrioides Lef) in maize

Autor Sandoya Miranda, Germán; Butrón Gómez, Ana María; Santiago Carabelos, Rogelio; Álvarez Rodríguez, Ángel ; Malvar Pintos, Rosa Ana
Palabras clave Insect resistance
Intrapopulation recurrent selection
Mediterranean corn borer
Maize
Sesamia nonagrioides Lef
Fecha de publicación nov-2010
EditorSpringer
Citación Sandoya G, Butrón A, Santiago R, Álvarez A, Malvar RA. Indirect response to selection for improving resistance to the Mediterranean corn borer (Sesamia nonagrioides Lef) in maize. Euphytica 176 (2): 231-237 (2010)
ResumenMediterranean corn borer (MCB) (Sesamia nonagrioides Lef) and European corn borer (ECB) (Ostrinia nubilalis Hbn) are the most important biotic stresses of maize in Europe. The first selection program to improve stalk resistance to MCB was carried out in the maize population EPS12. It has shown that selection was effective to improve stalk resistance to MCB and ECB, while yield was not significantly diminished. The objective of this research was to determine if correlated changes in EPS12 occurred due to selection for resistance to MCB. Cycles of selection per se and testcrosses to three testers were evaluated under MCB and ECB artificial infestation at two different Spanish locations during 2 years. Selection has significantly reduced cob damage, days to silking, plant and ear height, and 100-kernel weight; meanwhile early vigor was increased. These changes could rather be a consequence of unconscious selection and/or the genetic correlation of these traits with resistance than a consequence of genetic drift.
Descripción 21 Pag., 2 Tabl. The definitive version is available at www.springerlink.com
Versión del editorhttp://dx.doi.org/10.1007/s10681-010-0232-x
URI http://hdl.handle.net/10261/29658
DOI10.1007/s10681-010-0232-x
ISSN0014-2336
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