亚洲谷精草属种皮扫描电镜研究(I)  

SEM studies on morphology of seed surface structure of Eriocaulon from eastern and southeastern Asia.

作　　者：张志翔[1] Thomas Sttzel 

机构地区：[1]北京林业大学生物科学与技术学院 [2]德国波鸿鲁尔大学生物系

出　　处：《北京林业大学学报》2002年第5期81-83,T003-T004,共5页Journal of Beijing Forestry University

摘　　要：对亚洲谷精草属 (EriocaulonLinn .) 65种种子表皮突起物的起源、分布和类型进行扫描电镜研究 .突起物源于外珠被的内层细胞垂周壁的加厚 ,主要集中在纵向壁 ,有柱状、T 型、带状、条状、伞形和光滑 6种类型 .The seed coat of Eriocaulon is bitegmic. Each integument consists of two layers. The heterogeneous surface structure of the seed coat is generally derived from the thickenings of anticlinal walls of the inner layer of the out integument. These thickenings of cell walls provide very distinctive features and are more important than the general shape of the seeds. Whether only a part of the anticlinal walls or all of them are thickened, or if the thickenings are completely absent, is of essential diagnostic value. The thickenings in Eriocaulon occur often on the anticlinal walls, especially on the transversal ones, rarely in the corners between transversal and longitudinal walls.

关 键 词：亚洲 谷精草属 扫描电镜 种皮结构 突起物 分类 

分 类 号：Q949.718.15[生物学—植物学] Q944.59