叶表皮与种皮特征在黄精族系统学及研究中应用X.pdf文档全文免费阅读、在线看
植 物 分 类 学 报 38 ( 1) :30～42 (2000) Acta Phytotaxonomica Sinica 叶表皮及种皮特征在黄精族系统学研究中的应用 吕 海 亮 吴 世 安 杨 继 饶 广 远 (北京大学生命科学学院 北京 100871) A systematic study on the trib. Polygonateae( Liliaceae s . l . ) with reference to the evidence from leaf abaxial epidermis and seed coat L HaiLiang WU ShiAn YANGJi RAO GuangYuan ( College of Life Sciences , Peking University , Beijing 100871) Abstract The morphological features of leaf abaxial epidermis and micromorphological features of ( ) testa were observed in the tribe Polygonateae Liliaceae , s . l . . Seventy nine species from 7 genera of Polygonateae and 15 species from 12 genera of related tribes were examined with light microscope and SEM. In Polygonateae , the features of leaf and seed coat showed diversity in the genera Polyg onatum and Smilacina . According to the characteristics of the leaf abaxial epidermis and seed coat , Polygonatum could be roughly categorized as two groups. One was characterized by the irregular shape and the sinuate anticlinal wall of epidermal cells and the shallow pits on the testa , the other was characterized by the rectangular or rhombic shape and the straight anticlinal wall of epidermal cells and the ridge and reseau on the seed coat. In some plants of the two groups , the anticlinal wall of epidermal cells was found to be curved rather than sinuate , and might be of an intermediate na ture. The leaf epidermis and seed coat showed common feat
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