摘要
报道了产自江苏宜兴晚泥盆世五通组新疆亚鳞木（比较种）Ｓｕｂｌｅｐｉｄｏｄｅｎｄｒｏｎ ｃｆ． ｘｉｎｊｉａｎｇｅｎｓｅＳｕｎ）的表皮角质层用荧光分析显示的特征．该种茎干表皮角质层覆于叶座及叶座间隔带，其中间隔带角质层厚于叶座．表皮细胞在间隔带与叶座表现特征不同．间隔带中部，表皮细胞呈纵长的多边形，其纵长方向与茎干延伸方向相同，细胞壁略有弯曲．间隔带靠近叶座之表皮细胞，细胞壁直，形状类似于前者；但大小仅为前者的１／２左右，且其纵长方向逐渐向叶座边缘偏转．叶座表皮细胞呈近等多边形，有胞间隙．
The epidermal cuticle characteristics of Sublepidodendron cf. xinjiangense Sun in Wutong formation of late Devonian from Yixing city of Jiangsu province were studied using the technique of fluorescence analysis. The stem cuticle extended over the leaf cushions and its interval zones,when the cuticle thickness was more than at the leaf cushions. The shape of the epidermal cells in the interval zones differed from that in the leaf cushions, in which the epidermal cells of the central parts of the interval zones appeared in the elongated polygons, with coincided cell stretch direction as the stem growth,and with slightly curve cell walls. The shape of cells in the interval zones near the leaf cushions was similar to that in the former but only one half in size, with straight cell walls. Here the cells extended gradually with a deflection toward the margin of the leaf cushions. The cushion cells ware equilaterl polygons with visible cell interspaces. No stoma was discovered in the epidermis of this species.
基金
"八五"国家自然科学基金重点
"陆地植物的起源和早期演化的研究"资助
关键词
亚鳞木属
晚泥盆世
角质层
Cuticle
Fluorescence analysing
Wutong formation
