Table 5.

Spikelet Fertility of T₁ Transgenic Families from Each Construct under Normal Growth and Two Drought Stress Conditions.

Construct	Spikelet fertility (%)			Relative spikelet fertility
	Normal growth	Drought stress in field	Drought stress in PVC	Drought stress field	Drought stress PVC
Wild-type (ZH11)	76.7 ± 1.1	34.4 ± 1.0	58.7 ± 3.7	0.45	0.77
Actin1:CBF3	62.5 ± 2.8**	21.2 ± 1.0*	53.6 ± 3.3	0.34	0.86*
HVA22P:CBF3	61.5 ± 3.0**	15.7 ± 1.2**	43.8 ± 3.0**	0.26*	0.89**
Actin1:SOS2	62.0 ± 1.4**	30.1 ± 1.4	50.6 ± 3.3	0.49	0.82
HVA22P:SOS2	62.3 ± 1.1**	48.4 ± 1.2**	46.3 ± 3.2*	0.78**	0.74
Actin1:NCED2	61.7 ± 1.3**	13.5 ± 1.1**	45.5 ± 4.0*	0.22*	0.73
HVA22P:NCED2	60.0 ± 1.6**	21.2 ± 1.0*	47.6 ± 3.1*	0.35	0.79
Actin1:NPK1	64.4 ± 2.4*	13.6 ± 0.7**	59.7 ± 3.2	0.21*	0.82
HVA22P:NPK1	64.7 ± 1.1*	26.4 ± 1.2	55.7 ± 3.8	0.41	0.72
Actin1:LOS5	64.3 ± 1.5**	26.1 ± 1.0	53.6 ± 3.5	0.41	0.83*
HVA22P:LOS5	68.3 ± 1.9*	26.3 ± 1.5	56.1 ± 4.3	0.39	0.83*
Actin1:ZAT10	70.4 ± 2.7	40.8 ± 1.6*	60.4 ± 3.2	0.58*	0.86*
HVA22P:ZAT10	61.9 ± 2.8*	27.0 ± 1.1	60.2 ± 3.7	0.44	0.97**
Actin1:NHX1	68.7 ± 1.8*	23.0 ± 0.9**	57.3 ± 2.9	0.33	0.93*
HVA22P:NHX1	69.5 ± 1.7	19.9 ± 1.2**	50.2 ± 3.9*	0.29*	0.86*

The value is mean ± SE (n = 30 and 10 families for treatments in field and PVC, respectively). For each family, 16 and 10 plants were measured for treatments in the field and PVC, respectively.

** and * indicate significant difference (by LSD test) between transgenic families from each construct and the wild-type at the probability level of P = 0.01 and P = 0.05, respectively. Significantly higher values in transgenic rice are highlighted in bold.