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Table 4 Analysis of molecular variance (AMOVA) for nuclear and plastid microsatellite data for Epidendrum secundum populations, using four different models

From: Rock outcrop orchids reveal the genetic connectivity and diversity of inselbergs of northeastern Brazil

Source of variation

d.f.

Variance components

Variation (%)

P-value

Nuclear microsatellite

    

1) Among populations

4

0.97604

4.58

P = 0.087

Within populations

187

20.33329

95.42

 

2) Between Chapada Diamantina and Planalto da Borborema ecoregions

1

1.75359

7.81

P = 0.205

Among populations within biomes

3

0.36609

1.63

P = 0.331

Within populations

187

20.33329

90.56

P = 0.098

Plastid microsatellite

    

1) Among populations

8

0.22274

63.64

P < 0.001

Within populations

165

0.12727

36.36

 

2) Between Biomes (Caatinga and Brazilian Atlantic Forest)

1

0.00302

0.86

P = 0.386

Among populations within biomes

7

0.22154

62.97

P < 0.001

Within populations

165

0.12727

36.17

P < 0.001

3) Between Chapada Diamantina and Planalto da Borborema ecoregions

1

0.05130

11.61

P = 0.201

Among populations within biomes

4

0.25806

58.42

P < 0.001

Within populations

108

0.13241

29.97

P < 0.001

4) Between Chapada Diamantina and remaining populations

1

0.85932

61.21

P < 0.05

Among populations within groups

7

0.22273

15.87

P < 0.001

Within populations

165

0.32182

22.92

P < 0.001

  1. First model with all populations pooled, second model with populations from different biomes (Caatinga and Brazilian Atlantic Forest) separated, third model with populations from Chapada Diamantina and Planalto da Borborema ecoregions separated, and fourth model with populations from Chapada Diamantina separated from the remaining localities.