Table 2.

Stability assessment of all candidate reference genes of S. glauca plants’ response to salinity stresses calculated using the NormFinder algorithms.

Order	A		B		C		D		E		F
	Gene	Stability	Gene	Stability	Gene	Stability	Gene	Stability	Gene	Stability	Gene	Stability
1	PP2A	0.059	MPK6	0.152	TUA5	0.127	MPK6	0.092	PP2A	0.124	TUA5	0.069
2	TUA5	0.1	PP2A	0.153	PP2A	0.127	PP2A	0.106	MPK6	0.138	PP2A	0.113
3	MPK6	0.124	TUA5	0.168	MPK6	0.157	TUA5	0.126	TUA5	0.143	MPK6	0.143
4	CCD1	0.132	UPL1	0.189	V-H+-ATPase	0.173	V-H+-ATPase	0.200	ACT11	0.161	ACT7	0.192
5	UPL1	0.147	CCD1	0.207	ACT11	0.183	UPL1	0.205	CCD1	0.206	V-H+-ATPase	0.209
6	V-H+-ATPase	0.153	V-H+-ATPase	0.217	CCD1	0.185	CCD1	0.206	V-H+-ATPase	0.219	CCD1	0.227
7	ACT11	0.189	PHT4;5	0.252	UPL1	0.241	ACT11	0.218	PHT4;5	0.265	UPL1	0.230
8	ACT7	0.261	ACT7	0.271	ACT7	0.306	ACT7	0.304	ACT7	0.279	DREB1D	0.302
9	PHT4;5	0.301	DREB1D	0.372	DREB1D	0.356	PHT4;5	0.368	UPL1	0.302	ACT11	0.317
10	DREB1D	0.346	ACT11	0.394	PHT4;5	0.408	DREB1D	0.394	DREB1D	0.440	PHT4;5	0.353

A: Thirteen tissue samples derived from 1/10 MS liquid medium treatment.

B: Thirteen tissue samples derived from 100 mM NaCl treatment.

C: Thirteen tissue samples derived from 300 mM NaCl treatment.

D: Fifteen germinating seed samples derived from NaCl gradient treatment.

E: Eighteen seedling samples derived from NaCl gradient treatment.

F: All 72 samples used in this study.