Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/55549
Título: Induction of resistance of corn plants to Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) by application of silicon and gibberellic acid
Palavras-chave: Fall armyworm
Zea mays
Corn plants - Genetic Improvement
Lagarta do cartucho
Milho - Melhoramento genético
Data do documento: Ago-2017
Editor: Cambridge University Press
Citação: ALVARENGA, R. et al. Induction of resistance of corn plants to Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) by application of silicon and gibberellic acid. Bulletin of Entomological Research, Farnham Royal, v. 107, n. 4, p. 527-533, Aug. 2017.
Resumo: The aim of this study was to evaluate the effects of silicon application and administration of the phytohormone gibberellic acid on resistance of the corn plants to the fall armyworm (FAW), Spodoptera frugiperda, and their vegetative characteristics. We evaluated larval and pupal duration, survival and biomass, and adult longevity, malformation and fecundity of S. frugiperda after feeding on plant matter treated with silicon and/or gibberellic acid. The feeding preference of FAW first-instar larvae, the total leaf area consumed by the insects, and the vegetative parameters of corn plants were also evaluated. No significant differences were observed in the measured parameters of larval and pupal stages of S. frugiperda in response to silicon or gibberellic acid. In adult stage insects, the number of eggs per female was significantly reduced in insects derived from larvae fed plants treated with silicon or gibberellic acid. In a non-preference test, 48 h after release, caterpillars preferred control untreated plants and consumed less matter from plants that had received hormonal treatment (gibberellic acid). Gibberellic acid also altered the vegetative characteristics of plants, by increasing their height, shoot fresh and dry mass, and silicon content. We conclude that gibberellic acid can alter the vegetative characteristics and silicon uptake of corn plants, leading to a reduction in their consumption by S. frugiperda larvae and a decrease in female insect oviposition.
URI: https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/induction-of-resistance-of-corn-plants-to-spodoptera-frugiperda-j-e-smith-1797-lepidoptera-noctuidae-by-application-of-silicon-and-gibberellic-acid/F413A8E27925BAD1353F2AFF15EE2A53
http://repositorio.ufla.br/jspui/handle/1/55549
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