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Título

Maize (Zea mays L.) genetics factors for preventing fumonisin contamination

Autor Santiago Carabelos, Rogelio; Butrón Gómez, Ana María; Pintos-Varela, C.; Ordás Pérez, Amando; Malvar Pintos, Rosa Ana
Palabras clave Fumonisin
Fusarium verticilloides
Fusarium proliferatum
Plant resistance
Zea mays
Fecha de publicación 2006
EditorAmerican Chemical Society
Citación J. Agric. Food Chem., 2006, 54 (16), pp 6113–6117
ResumenFusarium moniliforme and Fusarium proliferatum are the most frequently isolated fungi from maize (Zea mays L.) in Spain. Both Fusarium species produce toxins potentially dangerous for animals and humans, the fumonisins being the most significant of those toxins. White maize is preferred for human consumption, and extra care should be taken to avoid kernel mycotoxin contamination. The objectives of this study were to identify and quantify kernel infection by Fusarium spp. and contamination by fumonisin on white maize hybrids, to search for white maize sources of resistance to infection by Fusarium spp. and mycotoxin contamination, and to preliminarily study the genetics involved in such resistances. Ten F1 single crosses derived from a diallel mating design among five white maize inbreds were evaluated in a randomized complete block design with three replications in 2002 at two locations. Fusarium verticilloides and F. proliferatum were detected on kernels of white maize hybrids cultivated in northwestern Spain. No differences in fungal infection were found among maize genotypes, but differences in fumonisin contamination were significant and could be related, in part, to differences in husk tightness. Among the genotypes studied, general combining ability (GCA) effects were the most important for resistance to fumonisin contamination. Inbreds EP10 and EC22 showed the most favorable GCA effects for husk tightness and fumonisin content, and the cross between them, EP10 × EC22, had the most favorable specific combining ability (SCA) effect for husk tightness. Inbreds EP10 and EC22 showed favorable GCA effects for fumonisin contamination and husk tightness, and the cross EP10 × EC22 was the only one with an average fumonisin level below 1 μg/g. Although this should be confirmed with more extensive studies, white maize inbreds developed from white maize landraces could be sources of resistance to fumonisin contamination.
Versión del editorhttp://dx.doi.org/10.1021/jf0611163
URI http://hdl.handle.net/10261/9723
DOI10.1021/jf0611163
ISSN0021-8561
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