Efeito da aplicação de silício em plantas de milho no desenvolvimento biológico da lagarta-do-cartucho Spodoptera frugiperda (J.E.Smith) (Lepidoptera: Noctuidae)
By Márcio Marcos Goussain, J. C. Moraes, J. Carvalho, N. L. Nogueira, M. L. Rossi. 2002
126 citations recorded by the source corpus.
The effect of the application of silicon to corn plants on the development of the fall armyworm Spodoptera frugiperda (J.E. Smith) was evaluated. Silicon treatment consisted in applying 3.2 ml of a sodium silicate solution [25-28% (w/v) SiO2] plus 96.8 ml of water into the soil at 5, 10, 15, 20 and 25 days after emergence of corn plants kept in pots. Another group of plants were grown free of silicon. Larvae were fed on leaves obtained from silicon treated plants and their mortality at the end of the 2nd larval instar, length of the larval and pupal period, and pupal weight were compared to those of larvae fed on normal leaves. No effect of silicon was observed on the length of larval and pupal phase, pupal weight and mortality of pupae. However, increased mortality and cannibalism were registered in groups of fall armyworm at the end of the 2nd instar and greater mortality of the larvae was seen at the 2nd and 6th instars fed on silicon-treated corn plant leaves in comparison with the control. The jaws mandibles of fall armyworm at the 6th instar showed marked wear on the incisor region when in contact with leaves with higher silicon content. Silicon application can make fall armyworm feeding difficult, causing higher mortality and cannibalism, thus increasing plant resistance to this species.
Subfields: Materials Chemistry, Plant Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/78287cddd93f92fbbe693f49beb242f210d84fb2
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Citations in the corpus
- Silicon‐mediated resistance of sugarcane to Eldana saccharina Walker (Lepidoptera: Pyralidae): effects of silicon source and cultivar (2006, background): “It is the Si deposits in epidermal tissues that appear to confer resistance to disease (Ishiguro 2001) and insect herbivores (Djamin and Pathak 1967; Goussain et al. 2002), although its role purely as a mechanical barrier against pathogens has recently been challenged (e.g. Rémus-Borel et al.…”