The changes of endogenous polyamine contents and the effects of exogenous spermidine on endogenous polyamines in leaves during flower bud physiological differentiation were studied with Red Fuji apple and Starkrimson.

• 以红富士苹果和新红星苹果为试材,研究了花芽生理分化期叶片内源多胺(PAs)的变化和外源亚精胺(Spd)对内源多胺含量的影响。