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林业科学 ›› 2010, Vol. 46 ›› Issue (8): 51-55.doi: 10.11707/j.1001-7488.20100808

• 论文 • 上一篇    下一篇

美国红梣雄株和雌株茎导管分子的形态解剖比较

郭学民1,高忠明2,刘振林3,梁丽松4,王贵禧4   

  1. 1.河北科技师范学院野生植物资源应用研究所 秦皇岛 066600; 2.河北科技师范学院数理系 秦皇岛 066600;3.河北科技师范学院园艺园林系 秦皇岛 066600; 4.中国林业科学研究院林业研究所 北京 100091
  • 收稿日期:2009-07-07 修回日期:2009-11-19 出版日期:2010-08-25 发布日期:2010-08-25
  • 通讯作者: 王贵禧

Comparative Anatomy of Vessel Elements in Staminate and PistillatePlants of Fraxinus pennsylvanica

Guo Xuemin1;Gao Zhongming2;Liu Zhenlin3;Liang Lisong4;Wang Guixi4   

  1. 1.The Research Institute of Wild Plant Resources Application,Hebei Normal University of Science & Technology Qinhuangdao 066600;2.Department of Mathematics and Physics,Hebei Normal University of Science & Technology Qinhuangdao 066600;3.Department of Horticulture and Landscape Architecture,Hebei Normal University of Science & Technology Qinhuangdao 066600;4.The Research Institute of Forestry,The Chinese Academy of Forestry Beijing 100091
  • Received:2009-07-07 Revised:2009-11-19 Online:2010-08-25 Published:2010-08-25

摘要:

运用离析法和显微照相技术,比较美国红梣雄株和雌株茎次生木质部导管分子的特征。结果表明: 美国红梣茎次生木质部导管分子中存在着许多不同的样式。雄株茎导管分子具有长导管性、宽导管性、梯纹-网纹导管和单穿孔等特征,这些特征为雄株在生长季节旺盛的水分需求提供强有力的结构保证。雌雄株导管分子差异的发现为该树种的性别鉴定奠定了理论与实践基础。

关键词: 美国红梣, 雌雄异株, 导管分子, 解剖结构

Abstract:

The characteristics of vessel elements of secondary xylem in shoots of staminate and pistillate plants of Fraxinus pennsylvanica were studied by isolation method and micrography. The results indicated that there were various patterns of vessel elements in F. pennsylvanica. The vessel elements in shoots of the staminate plants were longer and wider with scalariform-reticulated and simple perforation than that of the pistillate plants. These characteristics provided a powerful guarantee for vigorous water need during the growth season of the staminate plants. The knowledge of these differences of vessel elements between the staminate and the pistillate plants laid both theoretical and practical foundation for further research on sex identification of this tree species.

Key words: Fraxinus pennsylvanica, dioecism, vessel element, anatomic structure