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授粉受精是糯米糍荔枝花后子房正常坐果的刺激因子，授粉受精后子房ＡＢＡ从开花当天的最高水平急剧下降，而ＩＡＡ、ＧＡｓ和ＣＴＫ水平都升高，并在花后１２天达最高值。坐果期内源ＡＢＡ水平有３次明显高峰，分别出现在３次生理落果高峰前１周左右；内源ＩＡＡ和ＧＡｓ则有２次明显较高水平，分别与果皮和假种皮的迅速生长有关；而ＣＴＫ在胚败育前保持高水平，胚败育后才降至较低水平。荔枝果实中ＧＡｓ类有ＧＡ３、ＧＡ（４＋７）、ＧＡ５、ＧＡ９，ＣＴＫ类有ＺＴ、ＺＲ、ｄｉＨＺ、ｄｉＨＺＲ，并分别有不同的变化特点，ＧＡｓ和ＣＴＫ的构成和含量在胚乳解体和胚中途败育期的急剧变化可能与糯米糍荔枝的连续性生理落果现象有关。
Pollination and fertilization were the stimulating factors for the normal post-anthesis fruit setting performance of the litchi flower. After pollination and fertilization, ABA of the ovary decreased sharply from the highest level on the day of flowering, while the levels of IAA, GAs and CTK increased and reached the highest on the 12th day after flowering value. The endogenous ABA levels during fruit setting period were significantly higher than those of the control, with three obvious peaks at the first week before the third physiologic fruit drop; the endogenous IAA and GAs had two significantly higher levels, which were related to the rapid growth of the pericarp and aril respectively ; While CTK maintained high level before embryo abortion, embryo abortion before dropping to a lower level. The GAs in litchi fruits had GA3, GA (4 + 7), GA5, GA9 and CTK with ZT, ZR, diHZ and diHZR, and had different changing characteristics respectively. The composition and content of GAs and CTK in endosperm disintegration and embryo half-way defeat The sharp changes in the breeding period may be related to the continuous physiological drop-off phenomenon of litchi sticks.