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| DoVale,Júlio César; Fritsche-Neto,Roberto. |
| The improvement phosphorus use efficiency (PUE) allows to reach satisfactory yields with lower costs. A breeding strategy for PUE is to increase its components, the phosphorus acquisiton efficiency (PAE) and phosphorus utilization efficiency (PUtE). Thus, this study aimed to identify: i) the relative importance of the components of PUE, in high and low phosphorus; ii) the relationship of root system length and shoot dry mass (SDM) with PUE and its components and; iii) the genetic control of traits associated with the PUE. Forty-one hybrid combinations were evaluated in two experimental environments representing contrasting conditions of availability of phosphorus: low (LP) and high (HP). A randomized block design with two replications were used in simple... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Genic effect; Abiotic stress; Mixed Models. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000300018 |
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| Cardoso,Sara Santos; Guimarães,Marcelo de Almeida; Lemos Neto,Hozano de Souza; Tello,Jean Paulo de Jesus; DoVale,Júlio César. |
| ABSTRACT Lettuce is considered a crop of mild climate and its production in regions of low altitude and latitude is impaired due to the high temperatures and the predominance of long days. Therefore, the aim of this study was to evaluate the behavior of lettuce cultivars in such conditions. An experiment was conducted at the Horta Didática of the Federal University of Ceará, Campus do Pici, in Fortaleza. Nine lettuce cultivars from three commercial groups were used and distributed in a randomized block design, with four replications. The following qualitative traits were evaluated: bolting, head formation, leaf texture, anthocyanin and phytosanitary status for pest and disease infestation. Regarding the quantitative traits, plant height, plant diameter,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa L.; Bolting; Yield; Commercial groups. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400644 |
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| DoVale,Júlio César; Fritsche-Neto,Roberto; e Silva,Paulo Sérgio Lima. |
| Este trabalho teve por objetivo a elaboração de um índice que permita a seleção acurada de cultivares de milho com aptidão tanto para a produção de minimilho quanto para de milho verde. Os experimentos foram realizados no ano agrícola de 2002/2003 com dez cultivares comerciais de milho em dois experimentos. O primeiro quanto ao rendimento de minimilho e o segundo quanto ao de milho verde, delineados em blocos ao acaso com três repetições. A importância relativa dos caracteres estudados foi estimada por meio do método dos componentes principais e o agrupamento destes foi realizado pela análise de fatores. O seguinte índice foi obtido: I = 0,031 NEM + 0,013 MEM + 0,207 NEV + 0,243 MEV - 0,16 AP - 0,058 MFP, em que, NEM, MEM, NEV, MEV, AP e MFP são o número e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Componentes principais; Análise de fatores; Zea mays L. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000400008 |
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| Caixeta,Débora Santos; Fritsche-Neto,Roberto; Batista,Lorena Guimarães; Carvalho,Humberto Fanelli; DoVale,Júlio César; Lanes,Éder Cristian Malta de; Miranda,Glauco Vieira. |
| The objective of this study was to determine the relationship between heterosis and genetic divergence for phosphorus use efficiency (PUE) in tropical maize. It was used two groups of genitors, each consisting of seven lines, contrasting with each other in the nitrogen and phosphorus use efficiency. It was obtained 41 hybrid combinations between these groups, which were evaluated in low phosphorus. Randomized complete block design with two replications was used. For obtaining the components of variance and the breeding values were used REML/BLUP method. In the genotyping of the parental lines were used 80 microsatellite markers. Through the correlation between genetic distance obtained by the markers and specific combining ability it was not possible to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dissimilarity; Abiotic stress; Molecular markers; Combining ability. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000100011 |
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