Table II.

Tiller number, dry shoot biomass, panicle weight, and P content in shoot and panicle of each plant at harvest stage of the wild-type (WT) and 35S-driven OsPTF1 transgenic plants (35S:OsPTF1) in two-pot experiments

Two P fertilizer levels were employed at 60 mg P/kg (Bray-1, Pi = 13.70 mg P/kg) and 15 mg P/kg (Bray-1, Pi = 3.25 mg P/kg). Each pot contained 7.5 kg soil and individual plants were transplanted into each pot (n = 6). The value represents the mean ± se.

	First Experiment		Second Experiment
	WT	35S:OsPTF1-1	WT	35S:OsPTF1-1
60 mg Pi kg soil−1
Tiller number	25.00 ± 0.57	25.33 ± 0.84	20.31 ± 0.80	21.17 ± 1.17
Shoot biomass (g)	40.72 ± 1.79	42.20 ± 0.86	35.75 ± 1.97	36.64 ± 2.03
Panicle weight (g)	24.65 ± 2.03	25.24 ± 1.40	28.31 ± 3.10	29.46 ± 2.56
P content (mg)	37.75 ± 2.17	39.10 ± 1.91	34.16 ± 3.35	35.44 ± 3.05
15 mg Pi kg soil−1
Tiller number	5.17 ± 0.17	7.50 ± 0.22a	5.54 ± 0.24	7.58 ± 0.34a
Shoot biomass (g)	13.80 ± 0.49	18.54 ± 0.18a	10.88 ± 0.51	14.16 ± 0.33a
Panicle weight (g)	11.38 ± 0.84	14.14 ± 1.03a	10.52 ± 0.93	12.85 ± 1.60a
P content (mg)	14.17 ± 1.02	18.08 ± 0.91a	13.07 ± 1.14	16.30 ± 1.04a

^aSignificant differences in means between transgenic lines and wild-type plants at the P < 0.01 level.