学术
摘 要:
运用石蜡切片技术和扫描电镜方法，对一号冰川地区生长的4种藓类植物茎、叶的内部结构及叶表皮角质层褶皱、疣和中肋等进行观察，结果表明：红扭口藓（Barbula asperifolia Mitt．）茎横切面呈多棱形；叶背、腹面角质层厚，粗疣不分叉，但顶端朝细胞凹陷处倾斜；叶背面细胞壁凹陷深，象张开的气孔，粗疣也藏在其中，中肋突出明显。丛叶扭藓（Tortella humilis （Hedw．） Jenn．）茎横切面呈椭圆形；叶背、腹面中上部均密被鹿角状粗疣，这些分叉的粗疣，从凹陷的细胞壁处成束突起，顶端向下弯曲成钩状，在叶的下部疣状突起则逐渐减少至无，中肋较宽。异叶提灯藓（Mnium heterophyllum （Hook．） Schwagr．）茎横切面呈五棱形；叶细胞一层，呈不规则多边形，细胞壁凹陷使叶片呈网状；中肋红色。大灰藓（Hypnum plumaeforme Wils．）茎的横切面呈圆形；叶背、腹面均密被疣状突起，且差异不大，粗疣顶部均倒向孔口呈遮盖状；中肋短而弱。[著者文摘]
文章出处:
《植物研究》-2008年1期 -25-29页
分 类 号:
文献标识码:
A
文章编号:
1673-5102（2008）01-0025-05
Anatomy Studies of Four Mosses in Glacier No. 1 of Xinjiang
WANG Hong JIANG Yan-Cheng SU Jun （ College of Life science and Technology, Urumqi 830046）
Abstract:
Applied paraffin wax section and scanning electron microscopy to observing and analysing the inner structure of stems and leaf, the cuticular wrinkles, papillae and midrib of the leaf. The results indicate that transverse section of stem is mutirhomboidal, the cuticulas of cuticle and ventral are thicker in Barbula asperifolia Mitt. , the scabrous papillae is unforked, while top parts tilt to cell cave, cell wall of cuticle like splay stoma, scabrous papillae locate in it and Midrib distinct process. Transverse section of stem of Tortella humilis （ Hedw. ） Jenn. is ellipse, cuticle and mid-top renter are covered densely by scabrous papillae which are forked and protrude from cell cave and form a cluster, bent like a hook at the top, papillae reduce little by little under the leaf, with midrib broadish. Transverse section of stem of Mnium heterophyllum （Hook.） Schwagr. is pentagon, leaf cell are single and present unregular hexagon, whereas cell wall dent and become reticulation and midrib is red. Transverse section of stem of Hypnum plumaeforme Wils. is round, the cuticle and venter of are covered densely by rugged papilla that there is no appreciable distinction between them, top part of all scabrous papillae bend and tilt to stoma, present shade, midrib is short and ebb.[著者文摘]
Key words:
Glacier No. 1 ; mosses; anatomy
基金资助:
国家科技部重大项目（080010）和新疆大学高校基金（079314） 致谢 本实验所用植物名均由河北师范大学赵建成教授鉴定,特此致谢.
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