能够减缓植物生长的物质，例如植物激素脱落酸和乙烯(乙烯)。往往生长抑制剂在非常低的浓度下便可产生作用。
Growth inhibitor a substance that slows the growth of a plant, for example the plant hormones ABSCISIC ACID and ETHYLENE (ethane), which act at very low concentrations.
激素脱落酸（ABA）参与了植物对逆境适应，调节包括一些转录因子在内的许多逆境响应基因的表达。
The phytohormone abscisic acid (ABA) is involved in the adaptive stress response and regulates expression of many stress-responsive genes, including some transcriptional factors.
外源激素作用的不同使果实内源赤霉素和脱落酸的含量和比例也发生了变化，因此对糖的构成和积累效果也发生了变化。
The different of exogenous hormone made the content and proportion of endogenous ga and ABA had changed. So the effect of sugar composing and accumulation also had changed.
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