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 ExperimentSecond Experiment
WT35S:OsPTF1-1WT35S:OsPTF1-1
60 mg Pi kg soil−1
    Tiller number25.00 ± 0.5725.33 ± 0.8420.31 ± 0.8021.17 ± 1.17
    Shoot biomass (g)40.72 ± 1.7942.20 ± 0.8635.75 ± 1.9736.64 ± 2.03
    Panicle weight (g)24.65 ± 2.0325.24 ± 1.4028.31 ± 3.1029.46 ± 2.56
    P content (mg)37.75 ± 2.1739.10 ± 1.9134.16 ± 3.3535.44 ± 3.05
15 mg Pi kg soil−1
    Tiller number5.17 ± 0.177.50 ± 0.22a5.54 ± 0.247.58 ± 0.34a
    Shoot biomass (g)13.80 ± 0.4918.54 ± 0.18a10.88 ± 0.5114.16 ± 0.33a
    Panicle weight (g)11.38 ± 0.8414.14 ± 1.03a10.52 ± 0.9312.85 ± 1.60a
    P content (mg)14.17 ± 1.0218.08 ± 0.91a13.07 ± 1.1416.30 ± 1.04a
  • a Significant differences in means between transgenic lines and wild-type plants at the P < 0.01 level.