Association between the polymorphism at the QCK5e06 locus and flowering time variation in the Late F252. (a) Phenotypic effect associated with the frequency of the Late allele. Datapoints represent the flowering time deviation from the average genotypic value for each genotype in the genealogy as a function of the frequency of the Late allele at the QCK5e06 locus. The straight line represents the slope of the regression. (b) The simulated distribution of estimated additive effect for flowering time, a, was obtained by simulating a matrix of genotypes by gene dropping and performing an association test with the corresponding observed phenotypic matrix (see Material and Methods). Resulting a values from 20,000 simulations are plotted. The position of the triangle indicates the observed additive effect associated with the polymorphism at locus QCK5e06.
Durand et al. BMC Evolutionary Biology 2010 10:2 doi:10.1186/1471-2148-10-2