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Table 1 Sites of Origin (SO) for P. nigra association mapping population at Northington, UK

From: Biomass traits and candidate genes for bioenergy revealed through association genetics in coppiced European Populus nigra (L.)

SO

Nation

N

Latitude°N

Longitude°E

Basento

Italy

16

40.5

16.4

Paglia

Italy

21

42.8

11.8

Ticino-North

Italy

56

45.3

9.0

Ticino-South

Italy

37

45.2

9.1

Bonny

France

33

47.6

2.8

Dranse

France

35

46.4

6.5

Drome 1

France

55

44.7

5.4

Drome 6

France

53

44.8

4.9

Erstein

France

13

48.4

7.7

Guilly

France

31

47.8

2.3

Ramieres

France

37

44.7

4.9

Rhinau

France

19

48.3

7.7

Loire

France

44

46.4

3.2

Strasbourg

France

18

48.6

7.8

Taubergiessen

France

4

48.3

7.7

Val Allier

France

134

46.4

3.3

Ebro-Alfranca

Spain

24

41.6

1.0

Ebro-Novillas

Spain

24

41.9

1.4

Kuhkopf

Germany

33

49.8

8.5

Netherlands

Netherlands

23

52.1

5.7

Individuals

France (2), Italy (1), Hungary (1)

4

  1. Subpopulation names are given in the first column followed by the country within which they are located. The number of individual genotypes within each subpopulation is provided (N) and their mean latitudinal and longitudinal coordinates for statistical analysis and calculation of pairwise geographic distances. “Individuals” are unique genotypes from outside of the given subpopulations