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	Provedor de dados Scientia Agricola (2) Rev. Ciênc. Agron. (1) Bragantia (1) Autor Granato,Ítalo Stefanine Correia (4) Fritsche-Neto,Roberto (3) Almeida Filho,Janeo Eustáquio de (1) Alves,Filipe Couto (1) Bermudez,Felipe Pereira (1) Caixeta,Débora Santos (1) Dovale,Julio César (1) Galvão,João Carlos Cardoso (1) Mendonça,Leandro de Freitas (1) Menezes,Cicero Beserra de (1) Miranda,Glauco Vieira (1) Morais,Pedro Patric Pinho (1) Oliveira,Lucimar Rodrigues de (1) Reis,Gabriel Gonçalves dos (1) Resende,Marcos Deon Vilela de (1) Silva,Fabyano Fonseca e (1) Tardin,Flávio Dessaune (1) Vidotti,Miriam Suzane (1) Mais... Palavra-chave Abiotic stress (3) Correlation between traits (1) Maize improvement (1) Mixed models (1) NUE (1) Path analysis (1) Plant breeding (1) Winter maize (1) Zea mays (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2017 (1) 2015 (1) 2014 (2) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Accuracy and simultaneous selection gains for N-stress tolerance and N-use efficiency in maize tropical lines Scientia Agricola Mendonça,Leandro de Freitas; Granato,Ítalo Stefanine Correia; Alves,Filipe Couto; Morais,Pedro Patric Pinho; Vidotti,Miriam Suzane; Fritsche-Neto,Roberto. ABSTRACT Maize plants can be N-use efficient or N-stress tolerant. The first have high yields in favorable environments but is drastically affected under stress conditions; whereas the second show satisfactory yields in stressful environments but only moderate ones under optimal conditions. In this context, our aim was to assess the possibility of selecting tropical maize lines that are simultaneously N-stress tolerant and N-use efficient and check for differences between simultaneous selection statistical methods. Sixty-four tropical maize lines were evaluated for Nitrogen Agronomic Efficiency (NAE) and Low Nitrogen Tolerance (LNTI) response indices and two per se selection indices, Low Nitrogen Agronomic Efficiency (LNAE) and Harmonic Mean of Relative... Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic stress; Correlation between traits; Winter maize; Mixed models. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000600481 Early indirect selection for nitrogen use efficiency in maize1 Rev. Ciênc. Agron. Caixeta,Débora Santos; Fritsche-Neto,Roberto; Granato,Ítalo Stefanine Correia; Oliveira,Lucimar Rodrigues de; Galvão,João Carlos Cardoso. Several studies to evaluate nitrogen use efficiency (NUE) have been carried out using early growth stages. However, there are no scientific reports on the ideal stage for evaluation and on which characteristics have the highest correlation with the NUE at that stage. The aim therefore was to identify the phenological stages and secondary characteristics which maximize accuracy in early indirect selection for NUE in maize. To do this, three endogamic maize strains were evaluated in a completely randomised design with five replications, in a triple factorial scheme (strains x N levels x phenological stage), at two contrasting nitrogen levels: low and high nitrogen. The plants were evaluated at five growth stages: stage nine (V9), with 14 fully-developed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Path analysis; Abiotic stress; Plant breeding. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000200369 Genetic evaluation of grain sorghum hybrids in Brazilian environments using the REML/BLUP procedure Scientia Agricola Almeida Filho,Janeo Eustáquio de; Tardin,Flávio Dessaune; Resende,Marcos Deon Vilela de; Silva,Fabyano Fonseca e; Granato,Ítalo Stefanine Correia; Menezes,Cicero Beserra de. When it comes to recommending sorghum (Sorghum bicolor) cultivars, it is essential to carry out a genetic evaluation of the agronomic traits of promising genotypes from several common environments where the crop is cultivated. This study consisted of a genetic evaluation of 52 experimental grain sorghum hybrids and eight commercial cultivars. Hybrids were evaluated in 19 experiments representing the most varied cultivation conditions in Brazil. Traits of agronomic interest such as grain yield, flowering and plant height were analysed. Genotypic evaluation was performed following the REML/BLUP (Restricted Maximum Likelihood/Best Linear Unbiased Predictor) procedure; the MHPRVG (Harmonic Mean of Relative Performance of Genotypic Values) method was also... Tipo: Info:eu-repo/semantics/article Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000200009 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 Registros recuperados: 4 Primeira ... 1 ... Última

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