Genetic structure in cultivated grapevines is linked to geography and human selection

BMC Plant Biology

Table 3 Distribution of family relationship among genotype pairs, classified within and between structure subgroups

Structure level	Level	Related pairs (HS, FS, PO)	r ²
K_s = 3	Intra-Clusters	47%	0.11
	Inter-Clusters	1%	0.02
	Intra-Admixed	24%	0.05
	Inter Cluster/Admixed	28%	0.04
K_s = 5	Intra-Clusters	39%	0.14
	Inter-Clusters	1%	0.03
	Intra-Admixed	27%	0.04
	Inter Cluster/Admixed	33%	0.04
K_w = 12	Intra-Clusters	63%	0.14
	Inter-Clusters	37%	0.04

Note: For each couple, if both genotypes belonged to the same K group, or to the admixed group, the couple was assigned to the Intra-Clusters or the Intra-Admixed classes, respectively; similarly, a couple was assigned to the Inter-clusters and Inter Cluster/Admixed classes if they belong to different Ks or if one belong to one K and the other is “admixed”, respectively.
Ward’s clustering does not identify the “admixed” class.

ISSN: 1471-2229