Table 4.

The duplicate mode and estimation of the absolute date for large-scale duplication events in Chines white pear

	Duplicated pair	Duplicated mode	Number of conserved flanking protein-coding genes	Mean Ka	Mean Ks	Date (million years ago)	Ka/Ks
LYK1	PbrLYK1a — PbrLYK1b2	WGD/segmental	6	0.322	2.047	684.62	0.16
	PbrLYK1a — PbrLYK1b3	Dispersed	\	0.356	2.093	700.28	0.17
	PbrLYK1b1 — PbrLYK1b3	Dispersed	\	0.111	0.183	61.35	0.61
	PbrLYK1b2 — PbrLYK1b1	Tandem	\	0.090	0.173	57.72	0.52
	PbrLYK1b2 — PbrLYK3a2	Dispersed	\	0.675	2.305	771.03	0.29
	PbrLYK1b3 — PbrLYK3a2	Dispersed	\	0.729	1.828	611.36	0.40
LYK2	PbrLYK2 — PbrLYK4/5a1	Dispersed	\	0.802	\	\	\
LYK3	PbrLYK3a1 — PbrLYK3b1	Dispersed	\	0.642	2.259	755.67	0.28
	PbrLYK3a2 — PbrLYK3a1	WGD/segmental	8	0.001	0.021	6.90	0.07
	PbrLYK3a2 — PbrLYK3b1	Dispersed	\	0.638	2.073	693.36	0.31
LYK4/5	PbrLYK4/5b — PbrLYK1a	Dispersed	\	0.870	\	\	\
	PbrLYK4/5b — PbrLYK4/5a1	Tandem	\	0.572	2.616	875.16	0.22
LYM1/3	PbrLYM1/3–1 — PbrLYM1/3–2	Dispersed	\	0.605	2.786	931.98	0.22
	PbrLYM1/3–2 — PbrLYM1/3–3	Dispersed	\	0.588	2.000	668.94	0.29
LYM2	PbrLYM2–1 — PbrLYM1/3–2	Dispersed	\	0.735	1.290	431.63	0.57
	PbrLYM2–1 — PbrLYM2–2	WGD/segmental	8	0.009	0.011	3.78	0.77
	PbrLYM2–2 — PbrLYM1/3–3	Dispersed	\	0.755	1.529	511.53	0.49
NFP	PbrNFP1 — PbrNFP2	Dispersed	\	0.584	\	\	\
	PbrNFP2 — PbrLYK4/5a1	Dispersed	\	0.765	\	\	\
	PbrNFP2 — PbrLYK4/5b	Tandem	\	0.708	2.581	863.31	0.27