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.
出处
《林业科学》
EI
CAS
CSCD
北大核心
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
关键词
美国红梣
雌雄异株
导管分子
解剖结构
Fraxinus pennsylvanica
dioecism
vessel element
anatomic structure
