Table 1.

Allele-specific transcript ratio of ZmNAC1 in hybrids and parents (cDNA-RT PCR)

87-1	Zong3	P Allelic ratio 87-1: Zong3	Zong3/87-1		H Allelic ratio 87-1: Zong3
			87-1 allele	Zong3allele
1.27(0.00)	2.21(0.05)	0.58(0.01)*	1.69(0.03)	1.48(0.1)	1.15(0.06)

The allelic transcript ratios (87-1: Zong3) of parents and hybrids were compared with an expected ratio indicating an equal allelic expression of 1.0. The mean, standard error (in parenthesis), and P values in the t test were based on three biological replicates. * P < 0.05.