Table 2.

The frequency distribution of D′ value.

(A) Linkage disequilibrium (LD) for pairwise SSR loci among all 95 grapevine accessions.
Number of LD locus pairs	Frequency distribution of D′ (P < 0.001)
	0–0.2	0.2–0.4	0.4–0.6	0.6–0.8	0.8–1.0	Mean of D′
68 (8.72%)	0	14	32	20	2	0.5329
(B) Comparison of LD values for pairwise SSR loci between V. vinifera cultivars and wild Chinese grapes.
Population	Number of LD locus pairs	Frequency distribution of D′ (P < 0.001)
		0–0.2	0.2–0.4	0.4–0.6	0.6–0.8	0.8–1.0	Mean of D′
Vitis cultivars	18 (2.44%)	0	2	6	8	2	0.6046
Wild Chinese grapes	28 (3.59%)	0	0	9	11	8	0.7037