Data/hora: 03/07/2024 12:56:07

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	29/10/2019	
Data da última atualização: 	29/10/2019	
Autoria: 	DOMICIANO, G. P.; ARAUJO, L.; DUARTE, H. S. S.; FREITAS, C. C.; EINHARDT, A. M.; RODRIGUES, F. Á.	
Título: 	Nutritional status of rice plants supplied with silicon in response to Pyricularia oryzae infection.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Bragantia, Campinas, v. 79, n. 4, p. 1-6, 2019.	
Idioma: 	Inglês	
Conteúdo: 	Considering the importance of silicon (Si) to increase rice resistance to blast, this study investigated the nutritional status of rice plants supplied with this element in response to Pyricularia oryzae infection. Plants were grown in nutrient solutions containing 0 and 2 mmol·L-1 of Si (referred to -Si and +Si plants, respectively). The area under blast progress curve decreased for +Si plants due to a significant increase of 714% on the foliar Si concentration in contrast to -Si plants. For +Si plants, the foliar N, P, K, Ca, Mg, Cu, and B concentrations were significantly lower in comparison to -Si plants. On infected plants, the foliar N, K, and Cu concentrations were significantly lower in comparison to noninfected ones. The foliar Zn, Fe, and Mn concentrations were significantly lower for -Si inoculated plants in comparison to -Si noninoculated ones. The foliar Mn and S concentrations were significantly lower for +Si inoculated plants in comparison to +Si noninoculated ones. The foliar Fe concentration was significantly lower for +Si inoculated plants in comparison to +Si noninoculated ones. Foliar Zn and Mn concentrations were significantly lower for +Si plants in comparison to -Si plants regardless of their inoculation with P. oryzae. Foliar Fe and S concentrations were significantly lower for +Si plants in comparison to -Si plants, respectively, for noninoculated and inoculated plants. Taken together, Si stood for itself in reducing blast symptoms without the need of high foliar concentrations of either macro or micronutrients that could affect plantgrowth.	
Palavras-Chave: 	foliar disease; host resistance; plant nutrition.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_43712.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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