Data/hora: 20/06/2024 16:06:44

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	10/07/2017	
Data da última atualização: 	27/01/2023	
Autoria: 	ALVARENGA, R.; MORAES, J. C.; AUAD, A. M.; COELHO, M.; NASCIMENTO, A. M.	
Afiliação: 	ROBERTA ALVARENGA, UFLA; JAIR CAMPOS MORAES, UFLA; ALEXANDER MACHADO AUAD, CNPGL; M. COELHO, UFLA; A. M. NASCIMENTO, UFLA.	
Título: 	Induction of resistance of corn plants to Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) by application of silicon and gibberellic acid.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Bulletin of Entomological Research, v. 107, n. 4, p. 527-533, 2017.	
DOI: 	10.1017/S0007485316001176	
Idioma: 	Inglês	
Conteúdo: 	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.	
Palavras-Chave: 	Fall armyworm; IPM; Non-preference.	
Thesagro: 	Zea Mays.	
Categoria do assunto: 	O Insetos e Entomologia	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (23614-1) - UPC - AP - DD -  -  -  - DIS