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GENOMIC SELECTION AS A TOOL FOR MAIZE CULTIVARS DEVELOPMENT

2022; Volume: 21; Linguagem: Inglês

10.18512/rbms2022v21e1285

1980-6477

CAILLET DORNELLES MARINHO, Igor Ferreira Coelho, Marco Antônio Peixoto, GERALDO AFONSO DE CARVALHO, Márcio F. R. Resende,

Genetics and Plant Breeding

The ability to predict genotypes that have not yet been tested is always a target of plant breeders. Over the last twenty years, many studies presented genomic selection (GS) as a tool contributing to this goal. Currently, many research papers have shown encouraging results in the application of GS. However, there are few examples of long-term, successful applications of GS in plant breeding programs. Furthermore, for breeders and researchers considering the application of GS, there are a series of important considerations on how to adapt a breeding program to maximize the benefit of GS, aiming to reduce the costs and maximize the genetic gains. Under this perspective, we present a review with a general view about applied GS in maize breeding, future perspectives of this technique, and an applied study case of a breeding program using GS. We attempt to provide a brief review of the literature with recent developments, as well as a discussion involving the number of markers required to deploy GS, the different statistical approaches to create GS models, the different ways to define training populations, and the incorporation of non-additive effects and genotype by environment interaction. We end with general recommendations and conclusions about some critical points about adopting GS in maize breeding.