Table 4. Ordering of the candidate reference genes according to their expression stability values calculated by BestKeeper.

Pods		Tissues		4°C		40°C		NaCl		PEG		4°C and 40°C		NaCl and PEG		All samples
Genes	Values	Genes	Values	Genes	Values	Genes	Values	Genes	Values	Genes	Values	Genes	Values	Genes	Values	Genes	Values
ACT	1.00	ACP2	0.97	PEPC	0.95	TUB	1.00	MDH2	0.90	ACP2	0.99	TUA1	0.98	ACP2	0.92	UEP	0.97
UEP	0.99	TUA1	0.97	ACP1	0.89	TUA1	0.98	ACP2	0.90	EF2	0.98	UEP	0.95	RPL1	0.87	ACP2	0.97
CYP2	0.98	TUB	0.94	MDH2	0.88	EF2	0.96	ACP1	0.84	MDH2	0.97	EF2	0.95	UEP	0.86	RPL1	0.96
MDH2	0.97	TUA2	0.93	TUA2	0.84	MDH1	0.96	MDH1	0.78	MDH1	0.94	MDH1	0.94	MDH2	0.79	ACT	0.95
ACP2	0.97	RPL1	0.93	TUB	0.69	UEP	0.95	CYP1	0.78	ACP1	0.90	RPL1	0.93	EF2	0.77	ACP1	0.94
RPL1	0.95	ACT	0.91	ACP2	0.56	RPL2	0.92	RPL2	0.73	UEP	0.89	ACP1	0.91	RPL2	0.74	MDH2	0.89
EF1	0.92	EF1	0.83	RPL1	0.50	RPL1	0.90	EF2	0.65	RPL2	0.88	RPL2	0.86	ACP1	0.70	EF1	0.84
EF2	0.91	CYP1	0.83	ACT	0.43	ACP1	0.90	RPL1	0.14	RPL1	0.83	ACP2	0.84	GADPH	0.60	GADPH	0.72
RPL2	0.72	UEP	0.83	MDH1	0.41	CYP1	0.87	ACT	-0.36	GADPH	0.60	CYP1	0.81	ACT	0.21	CYP1	0.69
ACP1	0.66	ACP1	0.80	CYP2	0.33	ACP2	0.83	UEP	-0.50	ACT	-0.13	ACT	0.79	EF1	0.13	RPL2	0.67