Effect of exogenous GA_(3) on panicle character of different rice type

Effects of different concentration exogenous GA_(3) on the panicle traits were studied by using erect and curved panicle types of rice as materials. The results showed that the less difference between the panicle types was found with the different concentration exogenous GA_(3) treatment, but spraying different concentration exogenous GA_(3) at the different growth stage apparently increased plant height. And exogenous GA_(3) increased the length of panicle at the panicle initiation stage.