Study on Changes of Endogenous Hormones in Mango during Anthesis
Changes of four endogenous hormones, abscisic acid (ABA), indole-3-acetic acid (IAA), giberellin-3 (GA3) and zeatin riboside (ZR), during the flowering stage were studied in Baiyu and Jinbaihua mango. The results showed that the contents of ABA and IAA in Jinbaihua were higher than those in Baiyu, whereas the contents of GA3 and ZRs were lower at the expansion stage of flower buds. At the beginning of flowering, Baiyu had higher ABA and GA3, but lower IAA and ZR than Jinbaihua. At the prime stage of flowering, Baiyu had lower ABA, IAA, GA3 but higher ZR than Jinbaihua. All the four hormones were found lower in Baiyu than in Jinbaihua at the end of flowering.