Table 3.

The rank of RGs for normalization and their expression stability values calculated by the NormFinder program.

Rank position	Developmental stage		Cold		Drought		Total
	Gene	Stability value	Gene	Stability value	Gene	Stability value	Gene	Stability value
1	PP2A59γ	0.205	RPL13	0.075	PP2A59γ	0.084	PP2A59γ	0.145
2	UBCE32	0.238	RPL5B	0.095	RPL13	0.252	RPL13	0.157
3	RPL5B	0.243	PP2A59γ	0.157	UBCE32	0.328	UBCE32	0.160
4	PP2A57θ	0.291	EIF4A-14	0.174	CPY20-1	0.334	RPL5B	0.179
5	RPL13	0.305	UBCE32	0.184	UPL-RHF2A	0.408	CPY20-1	0.208
6	CPY20-1	0.313	CPY20-1	0.187	PP2A57θ	0.443	PP2A57θ	0.222
7	G6PDH	0.313	PP2A57θ	0.219	RPL5B	0.444	EIF4A-14	0.236
8	EIF4A-14	0.352	G6PDH	0.268	UBC18	0.460	G6PDH	0.311
9	TUBα3	0.356	EF1α	0.281	EIF4A-14	0.462	EF1α	0.320
10	UBC18	0.367	UPL-RHF2A	0.333	EF1α	0.481	UBC18	0.385
11	EF1α	0.494	TUBα3	0.437	ABCC8	0.573	TUBα3	0.393
12	GAPDH	0.528	UBC18	0.496	TUBα3	0.636	UPL-RHF2A	0.397
13	ABCC8	0.634	GAPDH	0.521	G6PDH	0.689	GAPDH	0.512
14	UPL-RHF2A	0.730	ABCC8	0.647	GAPDH	0.819	ABCC8	0.542
15	ACTβ	0.903	ACTβ	1.276	ACTβ	1.669	ACTβ	1.167