A Mid-Density Single-Nucleotide Polymorphism Panel for Molecular Applications in Cowpea (Vigna unguiculata (L.) Walp)

Figure 5

Linkage disequilibrium decay (LD) in a constituted population of cowpea. (a) LD decay within four genetic populations of cowpea: biparental RILs (slowest decay rate), multiparental RILs, breeding lines and accessions (fastest decay rate). (b) Chromosome-wide LD decay showing dissipation of LD along each of the 11 cowpea chromosomes; insert on the top right corners displays genome-wide LD decay at within 1.25 Mb between pairs of markers. For both figures, the -axis is the LD measure based on correlation coefficient and -axis is physical distance (Mb).

(a)

(b)