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Table 2 Ka/Ks analysis and estimate of the absolute dates for the duplication events between the duplicated ZmLTP genes

From: Non-specific lipid transfer proteins in maize

Duplicated pair

Ka

Ks

Ka/Ks

Date (Mya)

Duplicate type

Purifying selection

Group

ZmLTPg6/ZmLTPg16

0.091

0.123

0.7423

9.43

Segmental

Yes

Type G

ZmLTPg11/ZmLTPx2

0.127

0.236

0.5382

18.12

Segmental

Yes

Type G

ZmLTPg13/ZmLTPg21

0.334

0.379

0.8816

29.18

Segmental

Yes

Type G

ZmLTPd10/ZmLTPd11

0.359

0.519

0.6920

39.91

Tandem

Yes

Type D

ZmLTPd15/ZmLTPd16

0.022

0.119

0.1828

9.13

Tandem

Yes

Type D

ZmLTP2.7/ZmLTP2.9

0.475

0.443

1.0720

34.06

Segmental

No

Type 2

ZmLTPd7/ZmLTPd13

0.306

0.237

1.2910

18.24

Segmental

No

Type D

ZmLTP1.6/ZmLTP1.7

0.401

0.368

1.0911

28.28

Tandem

No

Type 1

ZmLTP2.7/ZmLTP2.8

0.339

0.314

1.0806

24.15

Tandem

No

Type 2

ZmLTPd12/ZmLTPd13

0.688

0.401

1.7169

30.81

Tandem

No

Type D

ZmLTPg6/ZmLTPg7

0.681

0.483

1.4094

37.17

Tandem

No

Type G

ZmLTPg6/ZmLTPg8

0.624

0.469

1.3300

36.06

Tandem

No

Type G

ZmLTPg7/ZmLTPg8

0.607

0.484

1.2533

37.24

Tandem

No

Type G

ZmLTPg20/ZmLTPg21

0.738

0.656

1.1245

50.46

Tandem

No

Type G