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Table 1 Detection of positive selection of TaPRX-2A and other 12 homologous PRX genes in plants

From: A member of wheat class III peroxidase gene family, TaPRX-2A, enhanced the tolerance of salt stress

Models

np

Estimates of parameters

lnL

LRT pairs

df

2∆lnL

P

M0: one ratio

1

ω = 0.12224

− 5255.0007

M0 /M2

3

249.899394

< 0.005

M1a: neutral

2

p0 = 0.74332, (p1 = 0.25668),

ω0 = 0.06658, (ω1 = 1.00)

− 5164.268639

    

M2a: selection

4

p0 = 0.41411, p1 = 0.29296,

(p2 = 0.29293), ω0 = 0.02081,

(ω1 = 1.00), ω2 = 0.14800

− 5130.051003

M1/M2

2

68.435272

< 0.005

M7: beta

2

p = 0.53605, q = 2.52403

− 5119.765697

M7/M8

2

7.47398

< 0.025

M8: beta and ω

4

p0 = 0.66950, (p1 = 0.33050),

P = 0.29052, q = 0.92947,

ω = 0.09129

− 5116.028707

    
  1. Abbreviation, np Number of free parameters; lnL Log likelihood; LRT Likelihood ratio test; df Degrees of freedom; 2ΔlnL Twice the log-likelihood difference of the models compared