Table 3.

Ranking of candidate reference genes in order of their expression stability as calculated by NormFinder software.

Rank	Total	Marieke	Pinza	Slim Whitman	Bulb	Scape	Leaf	Perianth	Corona
1	ACT	ACT	18SrRNA	GAPDH	GAPDH	ACT	GAPDH	GAPDH	b-TUB
M value	0.376	0.137	0.367	0.322	0.156	0.300	0.073	0.192	0.064
2	GAPDH	eIF	eIF	18SrRNA	QCR	GAPDH	CYP	30S RPS20	ACT
M value	0.394	0.174	0.392	0.360	0.398	0.445	0.119	0.232	0.130
3	QCR	QCR	GAPDH	ACT	30S RPS20	QCR	ACT	ACT	QCR
M value	0.505	0.424	0.426	0.404	0.462	0.661	0.126	0.295	0.165
4	CYP	CYP	CYP	eIF	eIF	eIF	QCR	QCR	CYP
M value	0.634	0.468	0.496	0.511	0.720	0.803	0.524	0.301	0.260
5	eIF	b-TUB	QCR	CYP	ACT	b-TUB	b-TUB	b-TUB	GAPDH
M value	0.705	0.569	0.509	0.623	0.769	0.818	0.669	0.520	0.267
6	b-TUB	GAPDH	ACT	30S RPS20	CYP	CYP	18SrRNA	eIF	30S RPS20
M value	0.765	0.617	0.556	0.706	0.860	0.838	0.764	0.620	0.608
7	30S RPS20	30S RPS20	30S RPS20	b-TUB	b-TUB	30S RPS20	30S RPS20	CYP	eIF
M value	0.789	0.649	0.712	0.710	0.906	1.221	0.839	0.842	0.620
8	18SrRNA	18SrRNA	b-TUB	QCR	18SrRNA	18SrRNA	eIF	18SrRNA	18SrRNA
M value	1.025	0.674	0.748	0.752	1.164	1.604	0.957	0.890	0.977