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| Baldoni,Aisy B.; Ramalho,Magno A. Patto; Abreu,Ângela de Fátima B.. |
| Strategies were investigated for improving efficiency in the use of segregating common bean (Phaseolus vulgaris) populations using crosses between the Andean cultivar BRS-Radiante and the Mesoamerican parent cultivar Carioca-MG by developing populations with 12.5%, 25%, 50%, 75% and 87.5% of the allele frequency of one of the parents. For each of the five populations we evaluated for two traits, the number of days to the beginning of flowering and grain yield (g plot-1), in the F2:3 (sown in February 2006) and F2:4 (sown in July 2006) generation progenies using 15 x 15 lattice design experiments, with 44 progenies (n = 220 plants) plus the two parents and three controls being evaluated for each generation. In terms of variability release, the populations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Backcross; Gene pools; Heritability; Phaseolus vulgaris; Selection gain. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500019 |
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| Silva,Marina F e; Maciel,Gabriel M; Finzi,Rafael R; Peixoto,Joicy Vitoria M; Rezende,Wender S; Castoldi,Renata. |
| ABSTRACT In the sweet corn breeding, the selection of superior genotypes should consider many traits simultaneously. The best strategy to select traits simultaneously is through selection indexes. This study aimed to compare the efficiency of different selection indexes based on characteristics with direct effect on grain yield in segregating sweet corn populations. Eighteen traits were evaluated in eight sweet corn genotypes on generation F3. Data were submitted to analyses of variance and path coefficient analyses. We compared the direct and indirect selection and the following indexes: base, classical, desired gains and genotype-ideotype distance. According to path coefficient analyses, the traits which showed a direct effect about grain yield (GY) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays subsp. sacharatta; Plant breeding; Selection gain; Simultaneous selection of characteristic. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100071 |
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| Martinez, Diego Tyszka; Resende, Marcos Deon Vilela de; Higa, Antonio Rioyei; Costa, Reginaldo Brito da. |
| The aim of this study was to compare, through simulation, the BLUP and BLUP-HET procedures for breeding values prediction under heterogeneity of residual variances. Random data were generated with spread sheet, considering a variance of 0,10 and variable residual variance, by number of clones, in order toprovide heterogeneity of variances. Actual and residual breeding values obtained were added to the mean 10, in order to obtain positive phenotypic values. Experimental design was random blocks with 100 genotypes, one plant per plot and 2, 5, 10 and 20 repetitions. Data were evaluated using Selegen software, obtaining estimated breeding values through BLUP and BLUP-HET procedures which were compared to actualbreeding values. In this study, using two and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Modelos lineares mistos; Parâmetros genéticos; Ganho com seleção Mixed linear models; Genetic parameters; Selection gain. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/249 |
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| Leite,Wallace de Sousa; Unêda-Trevisoli,Sandra Helena; Silva,Fabiana Mota da; Silva,Alysson Jalles da; Mauro,Antonio Orlando Di. |
| ABSTRACT The selection of superior genotypes of soybean is a complex process, thus exploratory multivariate techniques can be applied to select genotypes analyzing the agronomic traits altogether, increasing the chance of success of a breeding program. Thus, the objective of this study was to select soybean genotypes carrying the RR gene with good agronomical performance through of multivariate analysis and selection index and identify those traits that influence, also verifying the agreement of multivariate techniques and selection index in the selection process. The experiment was conducted in an increased block experimental being evaluated 227 genotypes of F5 generation, which 85 of those were detected to be glyphosate-resistant by PCR. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Clustering analysis; Principal components; Selection gain; Grain Yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300491 |
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