Number of markers required for association mapping studies.

a<p>Decay of LD with physical distance were fitted according to Ohta and Kimura (1969) <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0033470#pone.0033470-Ohta1" target="_blank">[37]</a> model: E (r²_ij) = 1/(1+4Neρd_ijρ). Where, r²_ij stands for the LD value between markers i and j, Ne for the effective population size, ρ for the per base recombination rate and d_ij for the distance in base pairs between markers i and j. The analysis was performed with the nls function in R. The composite parameter a = Neρ was estimated for the whole CS and the different genetic groups.</p>b<p>Achieved convergence tolerance obtained with the nls function in R.