摘要
首次报道我国特有单种属植物华木莲ＳｉｎｏｍａｎｇｌｉｅｔｉａｇｌａｕｃａＺ．Ｘ．ＹｕｅｔＱ．Ｙ．Ｚｈｅｎｇ木材的主要解剖特征：散孔材；管孔通常４８～１６８个／ｍｍ２；管孔单独或由２～３个稀６个成径列复管孔，间或出现管孔团；管孔略具棱角；主要为单管孔稀为梯状穿孔，具２～１３个横闩，通常３～８个。管间纹孔式梯状或梯状－对列；螺纹加厚缺如。导管分子长５４７～９７３μｍ，通常长７７５μｍ。木射线异形ⅡＡ及ⅡＢ型，少数Ⅰ型，具１～２有时３～４列细胞；单列射线高３～１１（偶至１８）个细胞，９９～３３７ｃｍ；多列射线宽２～３（～４）个细胞或３３．００～４０．３３μｍ，高４～５９（通常２１～４０）个细胞或１０９～１５５０（通常５４７～１０３４）μｍ；无油细胞；纤维管胞长８８６～１７６３μｍ，通常长１３０５μｍ；木薄壁组织轮界状，通常宽２～４有时可达５个细胞。本研究支持华木莲属的建立。
The present papar contributes the wood structure of Sinomanglietia glauca Z. X. Yu et Q. Y. Zheng, an endemic monotypic genus of the family Magnoliaceae. The anatomical features of this wood is described as follows: Diffuse-porous wood; pores 48～168 per. sq. mm, solitary or in radial multiples of 2～3 (may be up to 6) pore clusters also occur but rare, more or less angular in shape, perforation plates were chiefly simple perforated or rare scalariform, with 2～13 bars, generally 3～8, intervascular pittings scalariform or scalariform-opposite pittings, spiral thickenings sbsent; vessel elements 547～973 μm, generally 775μm long; wood rays heterogeneous, type Ⅱ A,Ⅱ B rareⅠ, sometimes 3～4 rows of upright cells on both margins, uniserate 3～11 cells (may be up to 18) or 99～337 μm high, the multiseriate rays 2～3(～4) cells or 33.0～40.33 μm wide, and 4～59 (mostly up to 21～40) cells or 109～1550(547～1034)μm high; oil cells absent, fiber tracheids 0.886～1.763 mm, generally 1.305 mm long; wood parenchma terminal narrow banded (generally 2～4 cells wide, may be up to 5). The multiseriate ray with one row of short branch, 5-cell (111.72 μm) high has been observed in this study. Besides, the multiseriate ray merged with the 4 neighouring axial parenchyma, as was discovered for the first time, taking on the shape of the aggregate ray with numerous cells in height and 4～13 cells (215.07～331.93 μm)in width. It seems extremely special in the Magnoliaceae's wood structure and further studies on it, therefore, are earnestly needed. The study supports the opinion of estoblishing Sinomanglietia Z. X. Yu.
出处
《江西农业大学学报》
CAS
CSCD
1999年第1期91-94,共4页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金
