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ID:43646151
大小:56.00 KB
页数:8页
时间:2019-10-11
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1、Thepseudobulbsandsubterraneanorgans(rootsandrhizomes)ofEulophiaepidendraea,andMalaxisacuminatainsubfamilyEpidendroideae(Orchidaceae)wereinvestigatedtodeterminemorphology,anatomyandmycorrhizaloccurrenee.(研究兰科树兰亚科的Eulophiaepidendraea(黄花美冠兰)和Malaxisacuminata(沼兰屈浅裂沼兰)的假鳞茎和地卜器官(根和
2、根茎)以确定其形态,结构和真菌菌根的发生)Theexaminedsectionsshowedthefollowingcommonanatomi-calcharacteristics.(被研究的切片显示以下几个相同的结构特点)Thepseudobulbshadauniseriateepidermis.Theassimilatorycellswerescatteredintheformofmucilage/waterstoragecellsinthegroundtissue.(假鳞茎有单层表皮,同化细胞以粘液或蓄水细胞的形式分散在基本组织中)Thev
3、ascularbundleswerecollateralandembeddedinthegroundtissue.Raphidesoccurredasidioblasts.维管束并行嵌入到基本组织屮。针品体发生在异细胞屮。Rhizomeshadanuniseriateepidermis,parenchymatousgroundtissuedifferentiatedintoouterandinnerzoneswithpolygonalintercellularspaces.Vascularbundlesscattered,collateralan
4、ddiscontinuousforminboththetaxa.AerationcellswerepresentinrootsandrhizomesofM.Acuminata.根状茎有单层表皮,薄壁基本组织分为含多边形细胞间隙的内区和外区。维管束以分散、并行和不连续形式存在于两个类群小。通气细胞存在于M.Acuminata(沼兰属浅裂沼兰)•的根和根状茎。ThetransversesectionofE.epidendraearootshadmulti-layeredvelamenwithspiralthickeningfollowedbyunis
5、eriateexodermiswiththathadwebbedtilosomes・Theparenchymatouscortexcontainedraphidesandwaterstoragecells.Vascularbundleswere11-15arched.RootsofM.acuminatahadanuniseriatevelamen,exodermis,parenchyma・touscortex,endodermisandpericycle.Thevascularbundleswereradiallyarranged,and11-1
6、2arched.Thexylemandphloemwereembeddedinsclerenchymatoustissue.E.epidendraea(黄花美冠兰)根的横切面有多层螺旋加厚的根被,其次是有webbedtilosomes.单层的外皮。薄壁皮质包含针晶体和储水细胞。维管束为11-15个拱形排列。M.Acuminata(沼兰属浅裂沼兰)的根有单层膜,外皮层、薄壁皮层、内皮层和屮柱鞘。维管束11-12个拱形呈放射状排列。木质部和韧皮部嵌入到厚壁组织。Theentryofthemycorrhizalfungiwaschieflythroug
7、hroothairsinrootsandepidermisinrhizomesofM.acuminata,andinE.epidendraea.FungiformedpelotonsinboththetaxaandmicrosclerotiaandmonilioidcellsintherootcortexofE.epidendraea・Additionally,Glomus・typevesicleswereoccasionallypresentintherootsofM.Acuminata・Descriptionofcharacteristics
8、arisingfromthisinvestigationmayprovideadditionalmorphologicalandanat
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