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Table 2 Summary statistics of genetic variation at 22 SSR loci and 353 SNP loci in the entire FEM germplasm collection and its four grape subpopulations

From: Genetic diversity and population structure assessed by SSR and SNP markers in a large germplasm collection of grape

Markers

Sample

N

n

A

a

AE

HE

HO

F

MAF

SSR

Total

1085

1036.7

499

22.682

6.191

0.814

0.743

0.090

-

Sativa

733

715.5

362

16.455

5.292

0.78

0.761

0.025

-

Sylvestris

139

136.5

234

10.636

3.618

0.699

0.627

0.104

-

Rootstocks

127

110.3

412

18.727

8.199

0.838

0.734

0.124

-

Hybrids

86

74.5

294

13.364

5.682

0.81

0.796

0.011

-

SNP

Total

1072

1027.0

706

2.000

1.588

0.344

0.309

0.093

0.25846

Sativa

728

703.1

704

1.994

1.589

0.345

0.349

−0.005

0.25809

Sylvestris

137

131.8

687

1.946

1.421

0.266

0.251

0.046

0.19964

Rootstocks

122

111.0

669

1.895

1.157

0.116

0.099

0.090

0.08193

 

Hybrids

85

81.0

696

1.972

1.565

0.335

0.337

−0.014

0.25668

  1. Total – entire germplasm collection (pooled sample treated as a single population); N – sample size; n – mean sample size over loci; A – number of different alleles; a – mean number of alleles per locus; AE – effective number of alleles; HE – unbiased expected heterozygosity; HO – observed heterozygosity; F – fixation index (inbreeding coefficient); MAF – minor allele frequency.