Table 3.

Expression stability of the 10 candidate reference genes calculated by BestKeeper analysis.

Rank	Salt treatment		Drought treatment		Heat treatment		Cold treatment		ABA treatment		Different organs		Total samples
	Gene	CV ± SD	Gene	CV ± SD	Gene	CV ± SD	Gene	CV ± SD	Gene	CV ± SD	Gene	CV ± SD	Gene	CV ± SD
1	ACT	1.46 ± 0.38	TUA	2.10 ± 0.56	UBC	2.6 ± 0.74	TUB	3.18 ± 0.84	PP2A	2.48 ± 0.67	CYP	2.38 ± 0.70	PP2A	3.52 ± 0.98
2	PP2A	2.42 ± 0.65	ACT	2.63 ± 0.70	CYP	2.66 ± 0.77	TUA	3.44 ± 0.97	TUB	3.05 ± 0.75	TUB	2.52 ± 0.68	ACT	3.62 ± 0.96
3	GAPDH	4.41 ± 1.08	TUB	2.75 ± 0.78	TUB	2.72 ± 0.71	ACT	3.66 ± 1.02	EF1-α	3.13 ± 0.68	PP2A	2.53 ± 0.73	TUB	3.84 ± 1.00
4	TUA	4.23 ± 1.11	PP2A	2.94 ± 0.78	PP2A	2.75 ± 0.78	PP2A	3.62 ± 1.04	His	3.43 ± 0.81	ACT	2.61 ± 0.72	CYP	4.19 ± 1.20
5	TUB	4.34 ± 1.12	EF1-α	3.48 ± 0.82	ACT	3.17 ± 0.85	CYP	3.77 ± 1.11	CYP	3.49 ± 0.95	TUA	3.32 ± 0.94	UBC	4.48 ± 1.28
6	UBC	4.28 ± 1.23	UBC	3.37 ± 0.97	GAPDH	3.32 ± 0.83	His	5.67 ± 1.41	ACT	3.54 ± 0.90	EF1-α	4.42 ± 1.08	TUA	4.56 ± 1.21
7	CYP	4.49 ± 1.30	GAPDH	3.53 ± 0.87	His	3.67 ± 0.95	UBC	5.58 ± 1.57	GAPDH	4.15 ± 0.97	GAPDH	4.46 ± 1.15	GAPDH	4.84 ± 1.19
8	His	5.26 ± 1.31	His	4.74 ± 1.19	TUA	3.71 ± 0.96	GAPDH	5.71 ± 1.44	UBC	3.8 ± 1.07	His	4.81 ± 1.27	EF1-α	5.27 ± 1.24
9	EF1-α	5.73 ± 1.36	CYP	4.96 ± 1.41	EF1-α	4.26 ± 1.01	EF1-α	5.78 ± 1.38	TUA	4.02 ± 1.01	HSP	5.74 ± 1.62	His	5.57 ± 1.39
10	HSP	6.50 ± 1.88	HSP	5.91 ± 1.67	HSP	9.99 ± 2.50	HSP	5.74 ± 1.60	HSP	8.29 ± 2.21	UBC	5.77 ± 1.73	HSP	7.92 ± 2.18