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| Pimentel,Eduardo da Cruz Gouveia; Sargolzaei,Mehdi; Simianer,Henner; Schenkel,Flávio Schramm; Liu,Zengting; Fries,Luiz Alberto; Queiroz,Sandra Aidar de. |
| The aim of this study was to compare iterative and direct solvers for estimation of marker effects in genomic selection. One iterative and two direct methods were used: Gauss-Seidel with Residual Update, Cholesky Decomposition and Gentleman-Givens rotations. For resembling different scenarios with respect to number of markers and of genotyped animals, a simulated data set divided into 25 subsets was used. Number of markers ranged from 1,200 to 5,925 and number of animals ranged from 1,200 to 5,865. Methods were also applied to real data comprising 3081 individuals genotyped for 45181 SNPs. Results from simulated data showed that the iterative solver was substantially faster than direct methods for larger numbers of markers. Use of a direct solver may allow... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding value; Genomic selection; Mixed model equations; Numerical method. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100033 |
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| Dias,Douglas Antônio; Polo,Leandra Regina Texeira; Lazzari,Fabiane; Silva,Glacy Jaqueline da; Schuster,Ivan. |
| Abstract: The objective of this work was to identify single-nucleotide polymorphism (SNP) markers linked with quantitative trait loci (QTLs) associated with increased contents of protein and oil in soybean. A total of 169 Brazilian soybean varieties, genotyped with 6,000 SNP markers, were evaluated. Protein and oil contents were obtained with the near-infrared reflectance method. Correlation and multiple linear regression analyses were used to identify linkage disequilibrium between SNP markers and the QTLs associated with the two characteristics. Seven QTLs were found to be associated with protein content, on six chromosomes (2, 6, 11, 12, 13, and 16), explaining 60.9% of the variation in this trait. For oil content, eight QTLs were identified on six... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Association genetics; Genomic selection; Grain quality; Linkage disequilibrium; Marker-assisted selection.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000896 |
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| Houston,Ross D.. |
| ABSTRACT Infectious disease is a major constraint for all species produced via aquaculture. The majority of farmed fish and shellfish production is based on stocks with limited or no selective breeding. Since disease resistance is almost universally heritable, there is huge potential to select for improved resistance to key diseases. This short review discusses the current methods of breeding more resistant aquaculture stocks, with success stories and current bottlenecks highlighted. The current implementation of genomic selection in breeding for disease resistance and routes to wider-scale implementation and improvement in aquaculture are discussed. Future directions are highlighted, including the potential of genome editing tools for mapping causative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genome editing; Genomic selection; Selective breeding. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600545 |
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