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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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| 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 |
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