Comparison of GWAS models to identify non-additive genetic control of flowering time in sunflower hybrids.

ABSTRACT:

Key message

This study compares five models of GWAS, to show the added value of non-additive modeling of allelic effects to identify genomic regions controlling flowering time of sunflower hybrids. Genome-wide association studies are a powerful and widely used tool to decipher the genetic control of complex traits. One of the main challenges for hybrid crops, such as maize or sunflower, is to model the hybrid vigor in the linear mixed models, considering the relatedness between individuals. Here, we compared two additive and three non-additive association models for their ability to identify genomic regions associated with flowering time in sunflower hybrids. A panel of 452 sunflower hybrids, corresponding to incomplete crossing between 36 male lines and 36 female lines, was phenot

SUBMITTER: Bonnafous F 

PROVIDER: S-EPMC5787229 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature