| Grant number: | 16/12977-7 |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| Start date: | November 01, 2016 |
| End date: | June 25, 2020 |
| Field of knowledge: | Agronomical Sciences - Agronomy |
| Principal Investigator: | Antonio Augusto Franco Garcia |
| Grantee: | Kaio Olimpio das Graças Dias |
| Host Institution: | Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil |
| Associated scholarship(s): | 18/00634-3 - Genomic prediction using multi-year data: A case study in a hybrid maize breeding program, BE.EP.PD |
Abstract Once reduction of the costs of genotyping technologies have been occurred, the use of genomic selection for the improvement of quantitative traits, is a technology that has been applied to increase the genetic gains and reduce costs of phenotyping in breeding programs. In genomic selection, phenotypic data arising from breeding programs in multiple environments trials may be used for the composition of training populations. To this end, statistical-genetics model that accounts for genotype-by-environment interaction need to be used. Furthermore, in species with high level of heterosis, such as maize, it is appropriate that the genomic selection models consider not only additive genetic effects, but also the non-additive genetic effects (dominance and epistatic) to the prediction of genotypic values of hybrids. In this context, this project goal is to implement genomic selection strategies in a maize breeding program using data from single hybrids evaluated in multiple environments trials. For this, a statistical-genetics model that accounts for genotype-by-environment interaction, additive and non-additive genetic effects will be proposed; and the accuracy of the proposed model for the prediction of the genotypic values of single hybrids will be evaluated in multiple environments trials. The models proposed in this project and also the results achieved will be of interest to plant breeding programs of other species, that uses multiple environments trials for phenotyping, and also use hybrids as a way to explore heterosis. | |
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