Is it possible to control fumonisin contamination in maize kernels by using genotypes resistant to the Mediterranean corn borer?
Insect activity has long been associated with Fusarium infection. The objectives of the current study were 1) to estimate the impact of Mediterranean corn borer, Sesamia nonagrioides Lefèbvre, damage on fumonisin contamination in the maize kernel by comparing fumonisin contamination under infestation and protected conditions, and 2) to measure the potential use of genotypes resistant to this borer as controlling factors of fumonisin contamination. Genotypes with increased kernel damage by borers tended to increase fumonisin accumulation under infestation conditions. In particular environments, other factors influenced fumonisin contamination more than damage by borers. When ear damage by borers is significant, maize resistance to ear damage could contribute to the reduction of fumonisin contamination in the kernels. Genotype such as EP42 x EP77 that combines low ear damage by borers and low fumonisin level across environments is a good choice to control fumonisin contamination. The use of an applicable methodology to identify Mediterranean corn borer-resistant genotypes to ear attack under artificial infestations might be a promising approach.
Misión Biológica de Galicia, Spanish Council for Scientific Research (CSIC), Apartado 28, E-36080 Pontevedra, Spain. rsantiago@mbg.csic.es
Rogelio
R
Santiago
Ana
A
Cao
Rosa Ana
RA
Malvar
Ana
A
Butrón
D000818:Animals; D002851:Chromatography, High Pressure Liquid; D005247:Feeding Behavior; D037341:Fumonisins / Q000032:analysis*; D005670:Fusarium / Q000502:physiology; D005838:Genotype; D007814:Larva / Q000502:physiology; D009036:Moths / Q000502:physiology*; D003313:Zea mays / Q000235:genetics* / Q000382:microbiology*
D037341:Fumonisins