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植物研究 ›› 2005, Vol. 25 ›› Issue (2): 151-154.doi: 10.7525/j.issn.1673-5102.2005.02.009

• 论文 • 上一篇    下一篇

凹叶厚朴细弱枝与粗壮枝导管分子的比较研究

胡江琴, 王利琳, 沈晓璟   

  1. 杭州师范学院生命科学学院, 杭州 310036
  • 收稿日期:2004-11-25 出版日期:2005-06-15 发布日期:2016-06-14
  • 作者简介:胡江琴(1967-),女,硕士,副教授,主要从事结构植物学研究工作。
  • 基金资助:
    杭州师范学院科研基金资助项目(2003XNZ03);国家濒危野生动植物种质基因保护中心重点实验室资助项目(02ZD004)

Comparative studies of vessels of leptos branch and stout branch in Magnolia biloba

HU Jiang-Qin, WANG Li-Lin, SHEN Xiao-Jing   

  1. School of Life Sciences, Hangzhou Normal College, Hangzhou 310036
  • Received:2004-11-25 Online:2005-06-15 Published:2016-06-14

摘要: 对凹叶厚朴粗壮枝和细弱枝的次生木质部进行离析研究,发现其导管穿孔板有两种类型,即单穿孔板和梯状穿孔板。在细弱枝中,具不同类型穿孔板的导管分子有八种类型,即一端为单穿孔板的导管分子,另一端为梯状穿孔板的导管分子;只有一端为单穿孔板的导管分子;只有一端为梯状穿孔板的导管分子;两端均为单穿孔板的导管分子;两端均为梯状穿孔板的导管分子;具三个单穿孔板的导管分子;两端具单穿孔板的导管分子,中间具多个梯状穿孔板的导管分子;具多个梯状穿孔板的导管分子。粗壮枝除了无具多个梯状穿孔板的导管分子外,其它细弱枝的导管分子的类型都具有。细弱枝的导管分子宽而长,粗壮枝导管分子窄而短。

关键词: 凹叶厚朴, 细弱枝, 粗壮枝, 导管分子, 单穿孔板, 梯状穿孔板

Abstract: d:\PDF\.pdfEducing and observing the stem's secondary xylem of Magnolia biloba revealed two type of perforation plate, simple perforation plate and scalarform perforation plate. There are eight types of vessel elements with different type of perforation plates in stout branch: one end scalarform type, the other simple type; only one end simple type; only one end scalarform type; both ends of the vessel element are simple perforation plate; both ends of the vessel element are scalarform perforation plate; three simple types; both ends of the vessel element are simple perforation plate, and the middle is scalarform type; a few scalarform types. Except the last type, stout branch have other seven types above. Stout branch's vessels are thin and short, but leptos branch's vessels are fat and long.

Key words: Magnolia biloba, leptos branch, stout branch, vessel element, simple perforation plate, scalarform perforation plate