Table 2.

Ranking of the expression stability of candidate reference genes calculated using NormFinder during plant regeneration

Rank	Callus		Seedlings		Plants		Total
	Gene	Stability	Gene	Stability	Gene	Stability	Gene	Stability
1	Histone	0.041	U6-1	0.041	UBP	0.210	bHLH	0.275
2	EIF4A	0.168	U6-2	0.041	bHLH	0.228	PP2A-2	0.302
3	U6-2	0.213	EIF4A	0.043	DNAJ	0.247	U6-1	0.303
4	U6-1	0.221	RPS18	0.082	U6-1	0.288	UBP	0.308
5	PP2A-2	0.222	bHLH	0.151	PP2A-2	0.296	U6-2	0.376
6	ACT7	0.277	GAPDH	0.267	RPS18	0.380	EIF4A	0.402
7	ATPase	0.284	ACT7	0.282	PP2A-A2	0.418	GAPDH	0.419
8	UBQ10	0.310	PP2A-2	0.288	UBQ10	0.424	PP2A-A2	0.427
9	GAPDH	0.335	DNAJ	0.374	EIF4A	0.427	DNAJ	0.461
10	RPS18	0.417	UBP	0.392	Histone	0.440	Histone	0.485
11	5.8S	0.424	PP2A-A2	0.472	ACT7	0.468	ATPase	0.499
12	bHLH	0.428	Histone	0.508	U6-2	0.471	ACT7	0.521
13	PP2A-A2	0.441	UBQ10	0.558	GAPDH	0.471	RPS18	0.561
14	UBP	0.526	ATPase	0.575	ATPase	0.544	UBQ10	0.582
15	DNAJ	0.533	5.8S	0.855	5.8S	0.921	5.8S	0.967
16	miR482	0.712	miR171	0.901	miR171	1.405	miR171	1.473
17	miR403	0.773	miR403	1.498	miR482	1.618	miR482	1.506
18	miR171	1.288	miR482	1.710	miR403	1.852	miR403	1.767