关键词: 杉木, 台湾杉, 香杉, 逐步判别分析

Abstract: Stepwise discriminant analysis was made from the data obtained from 9 traits of leaves (i.e. leaf length,leaf width,leaf thickness,width and thickness of vascular bundle,thickness of palisade tissue and mechanical tissue,thickness of epidermis and number of stomata),originating from 22 provenances of Cunninghamia lanceolata (Lamb.) Hook,Taiwania cryptomerioides Hayata and C. lanceolata (Lamb.) Hook.var.konisii (Hay.)Fujita. The optimized discriminant formula was developed by selecting thickness of palisade tissue (X₆),leaf length (X₁) and leaf thickness (X₃) as three important factors,i.e. F₁(Taiwania cryptomerioides Hayata)=-235.8714+17.3104X₆+26.3587X₁+5.9046X₃ F₂(Cunninghamia lanceolata (Lamb.) Hook)=-564.9259+78.4254X₆+93.1923X₁+0.6295X₃ F₃(C. lanceolata (Lamb.) Hook.var. konisii (Hay.) Fujita)=-349.4205+64.1926X₆+62. 6479X₁+0.8969X₃ and can be used to differentiate quantitively these three species, aiming at probing into the application of stepwise discriminant analysis to the classfication of tree species.

Key words: Cunniinghamia lanceolata (Lamb.) Hook, Taiwania cryptomerioides Hayata, C. lanceolate (Lamb.) Hook.var konisii (Hay.) Fujita, Stepwise discriminant analysis