title: New Strategies and Tools in Quantitative Genetics: How to Go from the Phenotype to the Genotype.
abstract: Quantitative genetics has a long history in plants: It has been used to study specific biological processes, identify the factors important for trait evolution, and breed new crop varieties. These classical approaches to quantitative trait locus mapping have naturally improved with technology. In this review, we show how quantitative genetics has evolved recently in plants and how new developments in phenotyping, population generation, sequencing, gene manipulation, and statistics are rejuvenating both the classical linkage mapping approaches (for example, through nested association mapping) as well as the more recently developed genome-wide association studies. These strategies are complementary in most instances, and indeed, one is often used to confirm the results of the other. Despite significant advances, an emerging trend is that the outcome and efficiency of the different approaches depend greatly on the genetic architecture of the trait in the genetic material under study.
authors.affiliation: Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78026 Versailles Cedex, France; email: olivier.loudet@inra.fr.
authors.forename: Christos
authors.initials: C
authors.lastname: Bazakos
authors.affiliation: Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78026 Versailles Cedex, France; email: olivier.loudet@inra.fr.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Hanemian
authors.affiliation: Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78026 Versailles Cedex, France; email: olivier.loudet@inra.fr.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Trontin
authors.affiliation: Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78026 Versailles Cedex, France; email: olivier.loudet@inra.fr.
authors.forename: José M
authors.initials: JM
authors.lastname: Jiménez-Gómez
authors.affiliation: Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78026 Versailles Cedex, France; email: olivier.loudet@inra.fr.
authors.forename: Olivier
authors.initials: O
authors.lastname: Loudet
mesh_terms: D002874:Chromosome Mapping / Q000379:methods*; D055106:Genome-Wide Association Study / Q000379:methods*; D005838:Genotype; D010641:Phenotype; D010944:Plants / Q000235:genetics*; D040641:Quantitative Trait Loci
keywords: GWAS; QTL; RIL; genetic architecture; phenotype