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Index selection of tropical maize genotypes for nitrogen use efficiency Bragantia
Granato,Ítalo Stefanine Correia; Bermudez,Felipe Pereira; Reis,Gabriel Gonçalves dos; Dovale,Julio César; Miranda,Glauco Vieira; Fritsche-Neto,Roberto.
Nitrogen (N) limitation in maize crops is related to the fact that the efficiency of nitrogen fertilization in maize does not exceed 50%, primarily due to volatilization, denitrification and soil leaching. Therefore, the development of new nitrogen use efficient (NUE) cultivars is necessary. The aim of the present study was to develop indices for the accurate selection of NUE maize genotypes for use in conditions of both high and low N availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Federal University of Viçosa during October 2010. A total of 39 experimental hybrid combinations and 14 maize lines differing in NUE were evaluated under two N availability conditions. We determined the relative importance of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic stress; NUE; Maize improvement.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200009
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