美国红梣雄株和雌株茎导管分子的形态解剖比较  

Comparative Anatomy of Vessel Elements in Staminate and Pistillate Plants of Fraxinus pennsylvanica

作　　者：郭学民[1] 高忠明[2] 刘振林[3] 梁丽松[4] 王贵禧[4] 

机构地区：[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

出　　处：《林业科学》2010年第8期51-55,共5页Scientia Silvae Sinicae

基　　金：河北科技师范学院博士基金

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。The characteristics of vessel elements of secondary xylem in shoots of staminate and pistillate plants o 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.

关 键 词：美国红梣 雌雄异株 导管分子 解剖结构 

分 类 号：S718.47[农业科学—林学]