...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Flora >Morphology, anatomy and mycotrophy of pseudobulb and subterranean organs in Eulophia epidendraea and Malaxis acuminata (Epidendroideae, Orchidaceae)
【24h】

Morphology, anatomy and mycotrophy of pseudobulb and subterranean organs in Eulophia epidendraea and Malaxis acuminata (Epidendroideae, Orchidaceae)

机译：上皮Eulophia epidendraea和Malaxis acuminata（Epidendroideae，Orchidaceae）的假鳞茎和地下器官的形态，解剖学和分支营养

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The pseudobulbs and subterranean organs (roots and rhizomes) of Eulophia epidendraea, and Malaxis acuminata in subfamily Epidendroideae (Orchidaceae) were investigated to determine morphology, anatomy and mycorrhizal occurrence. The examined sections showed the following common anatomical characteristics. The pseudobulbs had a uniseriate epidermis. The assimilatory cells were scattered in the form of mucilage/water storage cells in the ground tissue. The vascular bundles were collateral and embedded in the ground tissue. Raphides occurred as idioblasts. Rhizomes had an uniseriate epidermis, parenchymatous ground tissue differentiated into outer and inner zones with polygonal intercellular spaces. Vascular bundles scattered, collateral and discontinuous form in both the taxa.. Aeration cells were present in roots and rhizomes of M. acuminata. The transverse section of E. epidendraea roots had multi-layered velamen with spiral thickening followed by uniseriate exodermis with passage cells that had webbed tilosomes. The parenchymatous cortex contained raphides and water storage cells. Vascular bundles were 11-15 arched. Roots of M. acuminata had an uniseriate velamen, exodermis, parenchymatous cortex, endodermis and pericycle. The vascular bundles were radially arranged, and 11-12 arched. The xylem and phloem were embedded in sclerenchymatous tissue. The entry of the mycorrhizal fungi was chiefly through root hairs in roots and epidermis in rhizomes of M. acuminata, and in E. epidendraea. Fungi formed pelotons in both the taxa and microsclerotia and monilioid cells in the root cortex of E. epidendraea. Additionally, Glomus-type vesicles were occasionally present in the roots of M. acuminata. Description of characteristics arising from this investigation may provide additional morphological and anatomical means of identification. (C) 2015 Elsevier GmbH. All rights reserved.
机译：调查了表皮亚科（兰科）的假鳞茎和表皮Eulophia epidendraea的假鳞茎和地下器官（根和根状茎），以确定其形态，解剖结构和菌根的发生。检查的部分显示出以下常见的解剖特征。假鳞茎的表皮单一。同化细胞以粘液/储水细胞的形式散布在地面组织中。血管束为侧支，并嵌入地面组织中。环磷酰胺以成纤维细胞的形式出现。根茎有一个单一的表皮，薄壁组织被分化成具有多边形细胞间空间的外部和内部区域。在两个类群中，血管束散布，侧生和不连续。积雪草的根和根状茎中存在通气细胞。表皮葡萄球菌根的横切面具有多层螺旋状增厚的长孔，其后有具有网状提质体的传代细胞的不适当的外皮。薄壁皮层中含有杀虫剂和蓄水细胞。血管束呈11-15弓形。尖锐湿疣的根具有单一的绒毛，外皮，薄壁皮层，内胚层和周生周期。血管束呈放射状排列，并呈11-12弓形。木质部和韧皮部被嵌入硬化组织中。菌根真菌的进入主要是通过尖锐湿疣根茎和表皮大肠杆菌中根和表皮的根毛进入的。真菌在表皮葡萄球菌的根皮层中的类群和微菌核以及单核细胞中都形成了果胶。此外，Glomus型囊泡偶尔会出现在M. acuminata的根中。由这项研究引起的特征描述可能会提供其他形态和解剖学鉴定方法。 （C）2015 Elsevier GmbH。版权所有。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号