The analysis of the endogenous GA,ABA in the young fruit of the Washington navelorange and Jing orange has showed that the fruit drop correlates with the value of ABA,ABA/GA in the young fruits.

• 对华盛顿脐橙和锦橙幼果内源GA和ABA含量分析表明，脐橙幼果脱落与ABA含量呈极显著正相关，与ABA/GA呈显著正相关，与GA含量呈不显著负相关。