維管 的英文怎麼說

中文拼音 [wéiguǎn]
維管 英文
bundle sheath
  • 維 : Ⅰ動詞1 （連接） tie up; hold together; link 2 （保持; 保全） maintain; safeguard; preserve; keep ...
  • 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
  1. Pneumatophore ( aerophore ； breathing root ) a specialized negatively geotropic root produced by certain aquatic vascular plants ( especially trees such as mangroves, e. g

    呼吸根：指由某種水生維管植物產生的特化的負向地性根（尤其如紅樹，如海桑屬） ，在土壤之上生長良好。
  2. The process of vessel element ' s promotion, formation and connection in primary xylem of antirrhinum majus, a model plant, was observed through micropolariscope and bright - field microscope

    利用偏光顯微鏡和明場顯微鏡，首次報道了模式植物金魚草幼苗初生維管系統木質部導管分子的發育、形成和連接過程。
  3. The primary structures, the genesis and the structure formed of the primary vascular system and the structural change in the process of cotyledonary senescence of the seedlings of antirrhinum majus and other angiosperms were studied. the progress had been aquired in the aspects as follows

    本論文對金魚草等幾種被子植物幼苗的初生結構、幼苗發育早期初生維管系統的發生和建成后初生維管系統的結構以及子葉衰老過程中的結構變化作了較為全面的研究，在以下幾個方面取得了一定的進展： 1
  4. 1 water threatening - resistant characteristic : for instance, the outside tangency wall of epidermis cell prominently thicken ; the outside of epidermis cell are obviously covered by cuticle ; few stomats exists ; stomats are sunken ; and it has stmatic chamber structure, big aqueous tissues - parenchyma cell, mucilage cell, abnormal vascular, and soon

    抗水分脅迫的抗鹽結構特徵。如表皮細胞外切向壁明顯加厚，表皮外有明顯的角質層覆蓋；氣孔稀少、氣孔下陷及具有孔下室結構；大型貯水組織薄壁細胞、粘液細胞、異型維管束等。
  5. Most species occur only on a single host genus, but there were a few species, such as l. pinastri, which had a wide range of host and its ascocarps can appear on the needles of 16 kinds of haploxylon and diploxylon pines

    多數種僅知在單寄主屬上發生，但也有部分種能在多寄主上產果，如松針散斑殼（ l pinastri ）可危害16種單、雙維管束松樹。
  6. My botanical interest is largely confined to the reproductive processes in vascular plants.

    我對植物學的興趣主要限於維管植物的生殖過程。
  7. Secondary vascular tissue, found only in plants with secondary thickening, develops from the vascular cambium

    次生維管組織由維管形成層發育而來，僅存在於有次生加厚的植物中。
  8. Intrafascicular cambium ( fascicular cambium ) the part of the vascular cambium within the vascular between the xylem and phloem

    束中形成層：是位於木質部和韌皮部構成的維管束內的一部分維管形成層。
  9. Ecbp21 distributed more in vascular bundle and split sect such as cambium and stigma, and mainly in cell wall area

    Ecbp21在形成層、花拄頭等分裂旺盛的部位以及維管束中分佈更多，並且多分佈於細胞壁區域。
  10. The vascular cambium extends to form a complete ring of meristematic tissue around the stem, the separate vascular bundles being linked by interfascicular cambium

    維管形成層向兩側延伸直至形成一個莖內的分生組織環，各個維管束被束間形成層聯系在一起。
  11. In these chloroplasts carbon dioxide combines with phosphoenolpyruvate to form oxaloacetic acid, which is transported to the bundle sheath cells, where the carbon dioxide is released, then fixed by the enzyme ribulose bisphosphate carboxylase to form glycerate 3 - phosphate, the first step in the calvin cycle

    在葉肉細胞的葉綠體中二氧化碳與磷酸烯醇丙酮酸結合形成草酰乙酸，后被運到鄰近的維管束鞘細胞，在那裡二氧化碳被釋放，后被核酮糖二磷酸羧化酶固定形成3磷酸甘油酸，這是卡爾文的循環第一步。
  12. Cauline vascular bundle

    莖維管束
  13. The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment. during the past two decade, the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants, provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants. three new plant based epochs have been recognized. on the other hand, molecular sequence studies have provided insights into the phylogeny and early branches of land plants. a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences. this paper summarizes recent advances and new knowledges, comments on the phylogenetic studies based on the cladistic analysis

    陸生植物的起源和演化是地球生命中的重大事件，它影響到地球上所有的其他生命和全球環境。在過去的20年中，從中奧陶世歷經整個志留紀至早泥盆世的巖層中，化石植物微化石和大化石的新發現改變了人們對陸生植物起源的認識，並且為陸生植物和維管植物早期演化分異提供了基部類群分化的時間框架。據此人們識別出地史中的3個陸生植物的時代：始胚植物時代始維管植物時代和真維管植物時代。
  14. The bacteri of strain tl2 were found to be mainly distributed in the intercellular space of sclerenchyma in the root, the intercellular space of collenchyma and vascular bundle in the stem, the stomatal apparatus, the intercellular space of epidermal cell, collenchyma and endodermis in the leaf

    其菌體主要分佈在根部厚壁組織的細胞間隙，莖部厚角組織的細胞間隙、維管束等組織的細胞間隙、葉片的氣孔器附近、上下表皮細胞間隙、厚角組織細胞間隙以及內皮層組織細胞間隙等。
  15. The cuticles of most vascular plants are covered with a thin layer of largely hydrophobic constituents.

    大部分維管囊植物的角質層都被有薄薄一層很疏水的成分。
  16. In the main vein there exist some abnormal vascular bundles. salt glands were observed on epidermis. the cutin layer is thin

    葉脈為異形維管束；葉上表皮有鹽腺；角質層薄；柵欄組織中有巨型簇晶存在於胞間空腔中。
  17. 4. the studies focused on the cnz of dianthus barbatus and saponaria offlcinalis seedlings applied two different vascular cylinder types, even through they both were " " - shape exarch and diarch haplostele, their patterns of protoxylem and m

    此外，在商陸科的美洲商陸的子葉節區下部發現了一種具有雙大括號狀（ 「 { } 」 ）的維管柱類型。
  18. A clearly defined endodermis is seen in all roots and in the stems of the non seed - bearing vascular plants and some dicotyledons

    所有不產生種子的維管植物和一些雙子葉植物的莖中都可以清楚的顯示出這一結構。
  19. We have observed the following characteristics of anatomical structure and development : ( 1 ) the primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder ; ( 2 ) the root endodermis consists of thicken casparian strips, and there are from two lo four layers parenchyma cells near the pericycle ; ( 3 ) the pith and resins canals are absent in the toots ; ( 4 ) secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem ; ( 5 ) tanning materials are abundant in pericycle cells and phelloderm cells ; ( 6 ) sclereids are found in secondary phloem, and rays are rather rich in secondary xylem

    結果表明：氣生不定根具有以下結構特徵和發育特點： （ 1 ）根為二原型，側根正對著木質部發生； （ 2 ）幼根內皮層細胞具凱氏帶加厚，維管柱內緊挨中柱鞘內側具有2 ~ 4層大型薄壁細胞； （ 2 ）根中無髓和樹脂道； （ 4 ）次生結構發生於根毛區，維管形成層由初生木質部和初生韌皮部之間的薄壁細胞轉化形成； （ 5 ）中柱鞘和栓內層細胞富含單寧類物質； （ 6 ）次生韌皮部有石細胞，次生木質部射線發達。
  20. According to the space - tim e maturation during the development of the vessel elements in primary vascular system : the vessel elememts of the cotyledons and the lower portion of cnz formed firstly, then downward hypocotyl - root zone, at length, the vessel elememts of the upper and middle portion of cnz and epicotyl - shoot region connected with each other, the result uphold the seedling partition model that divides seedling into cnz, hypocotyl - root region and epicotyl - shoot region

    根據金魚草幼苗初生維管系統導管分子發育的時空性，即子葉和子葉節區下部導管分子先形成，然後向下形成下胚軸-根區的導管分子，最後子葉節區中、上部與上胚軸-苗區的導管分子再發生連接，據此支持將幼苗分為子葉節區、下胚軸-根區和上胚軸-苗區的幼苗分區模型。
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