Genome-Wide Selection for tropical maize root traits under conditions of nitrogen and phosphorus stress
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| Format: | Artículo científico |
| Langue: | en |
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Universidade Estadual de Maringá
2012
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| _version_ | 1876487642536738816 |
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| author | Roberto Fritsche-Neto |
| author_facet | Roberto Fritsche-Neto |
| contents | Genome-Wide Selection for tropical maize root traits under conditions of nitrogen and phosphorus stress Roberto Fritsche-Neto Julio César DoVale Éder Cristian Malta de Lanes Marcos Deon Vilela de Resende Glauco Vieira Miranda Agrociencias Marker abiotic stresses assisted selection recurrent selection The objective of this study was to verify the accuracy of the Genome-Wide Selection (GWS) method in tropical maize breeding for root traits under conditions of nitrogen and phosphorus stress. Forty-one single-crosses were evaluated in two experiments. The first experiment considered low nitrogen availability, and the second experiment considered low phosphorus availability. A randomized block design with two replicates was used. The lateral and axial root lengths were measured using WinRhizo software. The analysis of deviance was calculated using the Restricted Maximum Likelihood/Best Linear Unbiased Prediction (REML/BLUP) method. Eighty microsatellite markers were used to genotype the estimation population. The Random Regression method was used to analyze the GWS (RR-BLUP/GWS) data. The gains per unit time of the GWS and the phenotypic selection method were compared, as the standard phenotypic selection methods were considered to be the Recurrent Selection. The GWS accuracy was higher than the phenotypic selection accuracy for all of the traits evaluated. Thus, the GWS method may significantly increase the genetic gains for root traits that are obtained in tropical maize breeding programs for nutritional stress conditions. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303025342005 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.4 Vol.34 |
| format | Artículo científico |
| id | redalyc_303025342005 |
| institution | Redalyc |
| language | en |
| publishDate | 2012 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Genome-Wide Selection for tropical maize root traits under conditions of nitrogen and phosphorus stress Roberto Fritsche-Neto Agrociencias Marker abiotic stresses assisted selection recurrent selection Genome-Wide Selection for tropical maize root traits under conditions of nitrogen and phosphorus stress Roberto Fritsche-Neto Julio César DoVale Éder Cristian Malta de Lanes Marcos Deon Vilela de Resende Glauco Vieira Miranda Agrociencias Marker abiotic stresses assisted selection recurrent selection The objective of this study was to verify the accuracy of the Genome-Wide Selection (GWS) method in tropical maize breeding for root traits under conditions of nitrogen and phosphorus stress. Forty-one single-crosses were evaluated in two experiments. The first experiment considered low nitrogen availability, and the second experiment considered low phosphorus availability. A randomized block design with two replicates was used. The lateral and axial root lengths were measured using WinRhizo software. The analysis of deviance was calculated using the Restricted Maximum Likelihood/Best Linear Unbiased Prediction (REML/BLUP) method. Eighty microsatellite markers were used to genotype the estimation population. The Random Regression method was used to analyze the GWS (RR-BLUP/GWS) data. The gains per unit time of the GWS and the phenotypic selection method were compared, as the standard phenotypic selection methods were considered to be the Recurrent Selection. The GWS accuracy was higher than the phenotypic selection accuracy for all of the traits evaluated. Thus, the GWS method may significantly increase the genetic gains for root traits that are obtained in tropical maize breeding programs for nutritional stress conditions. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303025342005 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.4 Vol.34 |
| title | Genome-Wide Selection for tropical maize root traits under conditions of nitrogen and phosphorus stress |
| topic | Agrociencias Marker abiotic stresses assisted selection recurrent selection |
| url | https://www.redalyc.org/articulo.oa?id=303025342005 |