Table 3. Results from RefFinder comparing the qPCR profiles for each of the candidate reference genes.

	Ranking Order
Ranking Program	1	2	3	4	5	6	7	8	9	10
Recommended Comprehensive ranking	P7	P3	P2	P1	P4	P5	P8	P6	P9	UBQ
Delta CTa	P3	P7	P4	P2	P1	P5	P8	P6	P9	UBQ
BestKeeperb	P7	P3	P1	P2	P4	P5	P6	P8	P9	UBQ
Normfinderc	P7	P4	P3	P2	P1	P5	P8	P6	P9	UBQ
geNormd	P1 | P2		P3	P7	P4	P5	P8	P6	P9	UBQ

^a[15];

^b[16];

^c[17];

^d[18]