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汉语拼音：zhí wù jī sù

植物体内产生的对生长发育等生理过程起调节、控制作用的微量有机物。通常由一部分器官或组织产生，运到另一部分器官或组织发挥作用。已发现的有生长素、赤霉素、细胞分裂素、乙烯和脱落酸五类。

• The pleiotropy of the five well-studied plant hormones is somewhat analogous to that of certain hormones in animal.

  这五种被仔细研究过的植物激素的多效性在某种程度上类似动物的特定激素。

• Injurying seed coats, phytohormone treatments and chemical treatments can be used to break down dormancy of cucurbit seeds.

  破除瓜类蔬菜种子休眠的技术有机械损伤种皮、植物激素处理和化学药剂处理。

• On the basis of these experiments, this paper determined the contents of endogenous plant hormones levels in hardwood and shoot cuttings.

  本文在此试验的基础上，对嫩枝和硬枝插穗中内源植物激素水平进行了测定。

• Cytokinin: any of a class of plant hormones that promote cell division and growth and delay the senescence of leaves.

  细胞分裂素：一种促使细胞分裂和生长并且延迟叶子枯萎的植物激素。

• Auxins, one of the best-known plant growth factors, have an extremely wide spectrum of activity, and are particularly important.

  生长素---最被大众所熟知的植物激素之一，是一种相当重要，且具有相当广谱的调控活性范围的植物生长调节激素。

• Ethylene, as a very important phytohormone, regulates a variety of developmental process in plants.

  乙烯作为一种重要的植物激素，对植物的生长发育起着调节作用。

• The results showed that the germination rate can be remarkably improved by phytohormones and stratification.

  结果表明：植物激素浸种后里于室外层积处理可极显著地提高珊瑚朴种子的发芽率；

• The existence of ethylene, a kind of plant hormone, quickens up the maturity, consenescence and deterioration of most of the fruits.

  同时乙烯作为一种植物激素，它的存在加快绝大多数水果成熟、衰老甚至变质。

• Norton urges women to find alternative contraceptive methods and avoid so-called natural or herbal hormones as well.

  诺顿医生敦促女性寻求另外的避孕途径，同样要避免服用所谓的天然或者植物激素。