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Table 2 Selection on plant traits under saline and nonsaline treatments

From: The ecological genomic basis of salinity adaptation in Tunisian Medicago truncatula

Trait

S- nonsaline

S- saline

T X E

b- nonsaline

b-saline

T X E

Germ. age

0.215**

-0.006

5.13*

0.024

-0.121*

1.78

1st trifoliate age

-0.113

0.03

0

-0.421*

-0.049

3.49t

1st trifoliate lifespan

-0.018

0.111

1.87

0.072

0.146*

0.29

1st flowering age

0.164*

0.241**

0.93

-0.072

-0.195***

3.45t

% early pod set

-0.112

-0.129

0.61

-0.221***

-0.169**

0.34

SLA

0.046

0.038

0.01

-0.07

-0.162**

1.2

Leaflet width

0.077

0.073

0.27

0.207**

0.209***

0

Root length

0.197**

0.112t

2.41

0.245***

0.227***

0.12

1-branch length

-0.187**

-0.152*

0.06

-0.077

0.065

3.06t

2nd branch length

0.172t

0.201

0.13

0.272***

0.351***

3.18t

3rd branch length

0.161t

-0.023

2.48

0.297***

0.196***

0.6

2nd branch number

-0.042

0.043

0.69

0.135

0.273***

2.42

3 branch number

0.075

0.048

0.02

0.373***

0.383***

0.54

Stem diameter

-0.08

0.049

2.13

-0.052

0.053

1.16

Root diameter

0.171*

0.005

3.92*

0.264***

0.108t

2.47

Prop. reproduction

0.267***

0.329***

0.09

0.304***

0.346***

0

Root:shoot

-0.035

0.007

0.38

0.181**

0.018

2.85t

LWC

-0.065

-0.116t

1.18

-0.035

-0.172**

2.46

RWC TOP

-0.011

-0.085

0.53

0.166*

0.124*

0.06

RWC Bottom

0.042

0.117*

0.79

0.197**

0.171**

0.01

SWC

-0.043

0.027

1.65

0.064

0.057

0.12

  1. Selection differentials (S) and gradients (b) in non-saline and saline treatments, using the fitness metric relative total pod number. SLA: specific leaf area, LWC: leaf water content, RWC: root water content, SWC: stem water content. T X E: test for change in selection between saline and non-saline treatments. Significance is denoted by t: 0.10 > P > 0.05, *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001. Bold values indicate significance (P < 0.05) with transformed relative total pod number.