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Provedor de dados:  Bragantia
País:  Brazil
Título:  Nitrogen use efficiency in modern wheat cultivars
Autores:  Todeschini,Matheus Henrique
Milioli,Anderson Simionato
Trevizan,Diego Maciel
Data:  2016-09-01
Ano:  2016
Palavras-chave:  Triticum aestivum
Nitrogen nutrition
Path analysis
Resumo:  ABSTRACT The nitrogen use efficiency (NUE) is defined as the capacity of a given genotype in take advantage of the applied nitrogen (N) and transform it in biomass and grains. The objective of this study was to evaluate 12 wheat cultivars as to the NUE and its components. The experiment was conducted in a controlled environment, in a randomized block design with three replications. Twelve wheat cultivars were submitted to four N supply levels (0, 80, 160 and 240 kg of N∙ha–1). The data were submitted to analysis of variance, means multiple comparison, polynomial regression, and path analysis. The nitrogen remobilization efficiency (NRE) was the main NUE component of the evaluated cultivars, in both low and high conditions of nitrogen fertilization. In the cultivars average, the nitrogen utilization efficiency (NUtE) presented reduction tendency as the N supply was increased, tending to stabilization at the dose of 231 kg of N∙ha–1. The wheat cultivars Mirante, TBIO Itaipu, BRS Parrudo, and TBIO Iguaçu were the most efficient on the N use, and the first two were also efficient in remobilizing the N from the phytomass to the grains.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Instituto Agronômico de Campinas
Relação:  10.1590/1678-4499.385
Formato:  text/html
Fonte:  Bragantia v.75 n.3 2016
Direitos:  info:eu-repo/semantics/openAccess

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