The contents of GA 3 and IAA in spur bud were remarkably in-creased. While ZR and ABA content ,ZR/IAA,ZR/GAs ,ABA/IAA,and ABA/GAs in spur bud were decreased by GA 3 treatment.

• 相反,GA3处理降低了ZR/IAA、ZR/GAS、ABA/IAA和ABA/GAS比值,而抑制了花芽形成。