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Table 1 The synonymous (Ks) and non-synonymous (Ka) substitution rates for each gene pair and the estimated time of the tandem and segmental replication events of NAC genes

From: Genome-wide analysis of evolution and expression profiles of NAC transcription factor gene family in Juglans regia L.

Gene 1

Gene 2

Ka

Ks

Ka/Ks

Negative selection

JrNAC9-8

Jure_20254.t1

0.283565708

0.364839514

0.777234092

Yes

JrNAC13-5

Jure_05048.t1

0.129975351

0.236269542

0.55011471

Yes

JrNAC1-5

Jure_13612.t1

0.259477046

0.538664133

0.481704702

Yes

JrNAC10-5

Jure_17221.t1

0.259477046

0.538664133

0.481704702

Yes

JrNAC4-2

Jure_19897.t1

0.165094392

0.377652223

0.437159857

Yes

JrNAC2-11

Jure_20271.t1

0.165094392

0.377652223

0.437159857

Yes

JrNAC9-7

Jure_20272.t1

0.22262165

0.516172086

0.43129347

Yes

JrNAC10-8

Jure_28343.t1

0.22262165

0.516172086

0.43129347

Yes

JrNAC13-5

Jure_05048.t1

0.134350041

0.329749428

0.407430703

Yes