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对桉树内源生根抑制物Ｇ和“巨桉酚”，分别列出了化学结构和物理性质。分析对植物生根的抑制作用表明，随着茎叶组织成熟，Ｇ含量上升；不同种类桉树和不同成熟度的组织，Ｇ含量也不同，并有周期性的变化。在１Ｏ－４Ｍ时，抑制巨桉插条３０％～４０％发根，但在１０－５Ｍ时，不表现有抑制作用；巨桉的幼苗随着茎节数增多，Ｇ含量升高，在１２节数时，生根率几为０。两者的生理效应还有抑制种子萌发和叶片光合作用，具有生长素状活性，对气孔开放和水分散失的调节。还介绍了它们的提取和分离方法。
Eucalyptus endogenous root inhibitory G and “eucalyptol”, respectively, lists the chemical structure and physical properties. The analysis of the inhibitory effect on the rooting of plants showed that the content of G increased with the maturation of the stems and leaves, and the contents of G varied with different types of eucalyptus and different maturity tissues. At 1O-4M, inhibition of E. grandis cuttings 30% ~ 40% hair roots, but at 10-5M, did not show inhibition; Eucalyptus seedlings with increasing number of stems, G increased, at 12 When the number of knots, the rooting rate of a few 0. Both physiological effects as well as inhibition of seed germination and leaf photosynthesis, with growth hormone-like activity, the stomatal opening and water loss regulation. Also introduced their extraction and separation methods.