澳大利亚几种本土苏铁和两种美洲苏铁植物管状成分的研究

Yuyuan Huang, Harvey Ottley, Y. Yep, Sharon L. Wilson, David Griffiths, Nikeeta O’sullivan, Yanhua Han, Jane Hempel
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引用次数: 0

摘要

摘取热带地区达尔文市的澳洲本土种苏铁(Cycas angulata)、苏铁(Cycas armstrongii)和苏铁(Cycas conferta),以及达尔文植物园引种的泽木科(Zamia erosa)和山菖蒲(Guaiacum officinale),对其小叶、轴和茎的气管成分和薄壁组织细胞进行了光镜和电镜观察研究。结果表明:木质部导管成分较多;苏铁科与三米科的导管元件长度差异不明显,被子植物愈创木导管元件长度较短,但直径较小,我们认为导管元件长度较长,直径较大的特征更具进化性,因为它们在导管元件端壁上具有孔洞的连接点数量较少;通道空间越大,在单位长度范围和单位时间内的传导速度和数量更快、更多。这些血管有环状血管、螺旋血管、鳞状血管、网状血管、点状血管和鳞状点状血管等。在横切面上,苏铁科和三面科的导管分子呈圆形,呈多角形,更接近于一些被子植物的叶和茎的导管特征;然而,愈创木的圆形容器数量较多,约占35%,其他为多角形。导管直径以环状导管、螺旋导管最小,鳞状导管或鳞状网状导管中等,网状导管和点状导管最大。本文引自:Huang, y.y., Ottley, H., Yep, Y., Wilson, S., Griffiths, D., O 'sullivan, N., Han, Y.H. and Hempel, J.(2022)澳大利亚几种本土苏铁物种和两种美洲植物的管状成分研究。植物科学学报,2013,37(4):557 - 557。https://doi.org/10.4236/ajps.2022.131010收稿日期:2021年12月8日收稿日期:2022年1月25日出版日期:2022年1月28日版权所有©2022 by作者和Scientific Research Publishing Inc。本作品采用知识共享署名国际许可协议(CC BY 4.0)。http://creativecommons.org/licenses/by/4.0/
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Studies on Tracheary Element of Several Native Cycad Species in Australia and Two American Plants
Cycas angulata, Cycas armstrongii and Cycas conferta that are native species of Australia were collected in Darwin city of tropical region, Zamia erosa and angiosperm Guaiacum officinale of Zygophyllaceae which are introduced collected in the Darwin Botanic Gardens, and were carried out light microscope and electron microscope observed research to tracheary element and parenchyma tissue cells of leaflet, rachis and stem. The results showed that there are more vessel elements in their xylems; the length of vessel element of Cycadaceae with Zamiaceae are not obvious difference, the length of vessel element of angiosperm Guaiacum officinale is shorter, but their diameter is smaller, we thought that the characteristics which the length of vessel element is longer and the diameter is bigger are more evolutionary, because thus vessel, their number which interconnected points of possessed perforations’ end walls of vessel element is fewer, and the passageway space is larger so that the conduction speed and quantity are faster and more in unit length range and unit time. These vessels are annular vessels, spiral vessels, scalariform vessels, reticular vessels, pitted vessels and scalariform-pitted vessels, etc. In the transverse section, the vessel elements of Cycadaceae and Zamiaceae are circular, polygonous, more similar to vessel characteristics of leaf and stem of some angiosperms; however, the number of circular vessel of Guaiacum officinale is more, about occupy 35%, others are polygonous. The diameter of vessel is that annular vessel, spiral vessel is least, scalariform vessel or scalariform-reticular vessel is medium, reticular vessel and pitted vessel are the bigHow to cite this paper: Huang, Y.Y., Ottley, H., Yep, Y., Wilson, S., Griffiths, D., O’sullivan, N., Han, Y.H. and Hempel, J. (2022) Studies on Tracheary Element of Several Native Cycad Species in Australia and Two American Plants. American Journal of Plant Sciences, 13, 147-174. https://doi.org/10.4236/ajps.2022.131010 Received: December 8, 2021 Accepted: January 25, 2022 Published: January 28, 2022 Copyright © 2022 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/
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