臺灣博碩士論文加值系統

本文乃採用木材切片法、木材解離法、以光學顯微鏡觀察、量測及顯微照像等方法，觀察研究臺灣產31種（含種以下分類群）榕屬植物之木材解剖構造，文中記述各分類群之木材特徵，包括一般特徵及各項顯微結構，包括導管、纖維狀組織、縱向薄壁組織、木質線組織等，並製作成檢索表以供鑑定之用。
研究結果顯示，臺灣榕屬植物各節間及種間的木材解剖性狀特徵相似性頗高。可歸納為下列數個共同特徵：1. 散孔材，管孔多單獨並具少數之2－4個徑向複合，穿孔單一，側壁紋孔互生，管孔內常見填充體；2. 具真木纖維及隔膜木纖維；3. 圍管薄壁組織均為薄鞘狀，離管薄壁組織規則或不規則寬帶狀，均具菱形結晶；4. 木質線均為異性Ⅱ型，大部分兼具Ⅲ型及少數Ⅰ型，多列者最寬可達10個細胞寬，最高可達300個以上細胞高，常具小型乳管。
各種及屬下分類群之區別不很明顯，但雖細微仍有脈絡可循，與榕屬植物之傳統分類結果大致吻合，亦證明榕屬植物是一個比較自然的分類群。

An anatomic study on the wood characteristics of 31 including species and varieties of the genus Ficus in Taiwan, carried out was based on the their sliding section’s and wood maceration method.
Observations with light microscope and microphotography on the general features and microscopic characteristics, i.e., vessels, fiberous tissues, axial parenchyma and rays etc., was made. And an identical key was also provided for their wood identification.
The results show the high similarity in the anatomical structure among the species in Ficus. It can be concluded to the same characters : 1. Diffuse porous wood, each pore is always with 2-4 multiple pores at radial longitudinal section, pore solitary, pits of side wall are alternate, and tyloses are usually found in the pore. 2. It has xylary fiber and septate fiber. 3. The shape of vasicentric parenchyma is as thin sheath and the shape of apotracheal parenchyma is as regular or irregular broad belt, with rhomboidal crystal. 4. All of the typeⅡ heterogeneous ray, most of them are typeⅡ, and few are typeⅠ. The width of multiseriate rays is up to 10 cells and the height is up to 300 cells. And small laticifer is often found in rays.
Although the taxon under species and genus cannot be distinguished very obviously, there are still some clues can be found to demarcate them into the taxa in rank of sections and species also.
The systematic classification based on the wood anatomy is highly in compliance with these on the classical taxonomy. It is therefore confirmed the genus Ficus is a rather natural genus.