维管束

wéi ɡuǎn shù
  • vascular bundle
维管束维管束
维管束 [wéi guǎn shù]
  • [vascular bundle] 植物体内输送水分、养料的通道,呈束状

  1. 结果显示,磷酸化酶mRNA在柱头、花柱、子房壁以及维管束中大量表达,而胚珠中除合点部位外表达很弱。

    Phosphorylase mRNA was substantially expressed in the stigma , style , ovary wall and vascular bundle , but weakly in ovular tissues except chalazal portion .

  2. 结果表明,开花后7d颖果还没有形成完全分化的维管束。

    The results showed that the main vascular bundle did not appear to be fully differentiated at the 7 th day after anthesis .

  3. 高粱DNA导入水稻后代维管束与气腔的解剖观察

    Anatomy of the Vascular Bundles and Gas Chambers of Rice Introduced with Sorghum DNA

  4. 离体的维管束鞘细胞束也有一定的CO2固定能力。

    Isolated bundle sheath cells alsoshowed a certain capacity of CO_2 fixation .

  5. C4转基因水稻秧苗叶片气孔与叶鞘维管束结构特征

    Structure Characteristics of Stomata in Leaves and Vascular Bundles in Culms of Transgenic Rice Expressing C4 Photosynthesis Enzymes

  6. 地上器官维管束中木质部不呈“V”字形;

    Xylem of overground organs doesn 't show V-shaped appearance .

  7. 同一维管束内则以韧皮部细胞的ATP酶活性最强。

    The highest ATPase activity was localized at the plasmalemma of phloem cells .

  8. 检测到3个控制穗颈维管束数的QTL;

    For vascular bundles , three QTL were detected .

  9. 6-BA诱导维管束中发生形成层以及诱导皮层细胞启动。

    , 6-BA induced the division of vascular cambium and cortex cells .

  10. 结果表明,野生一粒小麦在叶片维管束解剖结构、水分利用效率及光合速率对光、温和CO2的反应方面类似于C4植物。

    The results indicated that the wilddiploid T.boeoticum was similar to C_4 plants in leaf anatomy and in the response to light , temperature , CO_2 concentration and water .

  11. 小麦DH群体穗下节间维管束及相关性状QTL分析

    QTLs for the Vascular Bundle System and Correlative Traits of Uppermost Internode Using a Doubled-haploid Population in Wheat

  12. CaM的相对含量在维管束伴胞细胞核中最高,而且在病原菌侵染后变化最明显。

    The relative content of CaM in the nucleus of companion cell was the highest in all the cells , and its increase was also most evident after inoculation .

  13. 2个控制一次枝梗数的QTL效应较小,但分别与控制穗颈维管束数的2个QTL同位。

    Two QTL controlling primary rachis branches were identified and they were co located with 2 of the 3 QTL for vascular bundles respectively .

  14. 类型3:CⅡ-25、CⅡ-39,髓腔小,叶片和花梗的维管束分别呈2排状和2环状分布,总数分别为36.3-36.7和56.3-58.3。

    Type three included CII - 25 and CII - 39 . The dental antrum was small . There were 2 layers of vascular bundles in leaf tissue and pedicel . The total number is 36.3-36.7 and 56.3-58.3 , respectively .

  15. 对T2代双突变体植株表型初步观察显示,植株有明显矮化现象,但维管束和叶毛的发育基本正常。

    Primary observation to T2-generation showed that double mutant plant had obvious dwarf phenotype , but had no defect in leaf trichome and vasculature .

  16. 香蕉枯萎病是由土壤真菌尖镰孢古巴专化型(Fusariumoxysporumf.sp.cubense)引起的维管束系统性病害。

    Fusarium oxysporum is vascular systemic diseases , which is induced by Fusarium Cuba biotypes ( Fusarium oxysporum f.sp . cubense ) .

  17. 体细胞胚经过球形胚、心形胚、鱼雷形胚和子叶胚而发育成再生植株,子叶期体细胞胚可观察到明显的V型维管束、茎尖分生组织以及根尖分生组织。

    Plantlet regenerations were developed from global embryo , heart-shaped embryo , torpedo-shaped embryo and cotyledon embryo , in which the V-shaped vessel vascular bundles and shoot tip meristem and root tip meristem were observed .

  18. D10主要在许多器官的维管束细胞表达。

    D10 expression predominantly occurs in vascular cells in most organs .

  19. 同时,在心形胚阶段已经出现维管束的分化,鱼雷胚后期可见维管束呈明显的V字形,与母体组织相独立,表现出明显的极性。

    At the same time , vascular bundle differentiated at heart embryo stage that took on the character " V " at late of torpedo , and did not contact with mother tissues , obvious bipolarity was detected .

  20. 叶脉数量增多、维管束体积增大均与C4途径的表达程度显著正相关。

    There was a significant positive correlation between increasing numbers of veins or volume of vascular bundle per unit leaf area and the extent of performed C4 photosynthetic pathway .

  21. 结果表明,在碱法制浆过程中,麦秆外表面皮层及皮下纤维层中的Si对碱的稳定性较差,麦秆内部的维管束及内表皮层中Si的碱稳定性较高;

    The results show that , under the experimental conditions , the alkali stability of silicon in outer cuticle and in its neighboring fiber wall is lower , and that of the silicon in bundle sheath and in inner epidermis is very high .

  22. 分析研究了脐橙果实生长和成熟过程中汁泡、果实维管束和果皮内糖分含量与SPS活性变化动态。

    Variations in sugar content and SPS activity in the juice sacs , peel and fruit vascular bundles were monitored during fruit growth and maturation of Newhall orange ( Citrus sinensis Osb . )

  23. 尽管薇甘菊叶片为典型C3植物特征,结果发现了茎以及主叶脉内存在类似C4途径的、具有丰富叶绿体的维管束鞘结构。

    Although leaf photosynthesis of this weed is of the C3 type , a C4-like vascular bundle full of chlorophyll was observed in the main vein of the leaf and young stems .

  24. 在感染RSD甘蔗茎维管束导管细胞内积累有大量的电子致密物质,细胞壁有不同程度的溶解和断裂,这可能和RSD病原细菌侵染有关。

    There was a large amount of electron-dense substances accumulated in the infected stalk cells that might be associated with bacterial infection , and xylem cell walls were degraded and broken in different degrees .

  25. 将整株阳性小苗和成熟苗的组织器官进行GUS染色,结果表明GUS基因在拟南芥幼苗和营养器官中的维管束组织表达,在生殖器官中则在雌蕊和雄蕊中表达。

    Gus staining of transgenic plant seedlings and mature plants tissues indicated that the mutant gene was expressed in vascular tissue of the Arabidopsis seedlings and in vegetative organs , also expressed in the pistil and stamen . 5 .

  26. 接后24d,维管束桥形成,并进一步分裂分化产生输导组织,实现嫁接体的完全愈合。

    In 24 days , vascular bridge formed , which further divided and gave difference to form vascular tissue , then to cause success of grafting .

  27. 采用半薄切片和组织化学方法研究了木立芦荟(Aloearborescens)叶内维管束的发育过程,并着重于维管束鞘细胞和芦荟素细胞的来源及组织类型。

    Semi-thin sectioning and the method commonly referred in histochemistry were used to study the development of vascular bundles in Aloe arborescens leaves with emphasis on the origins and tissue types of vascular bundle sheath cells and aloin-containing cells .

  28. 附生维管束植物的ShannonWiener指数和Simpson指数分别为2.93和0.91,附生苔藓植物分别为3.31和0.95。

    Of these , 46.4 % and 53.6 % were vascular and bryophyte epiphytic species , respectively . The Shannon Wiener index and Simpson index were 2.93 and 0.91 for vascular epiphytic species , and 3.31 and 0.95 for bryophyte epiphyte species , respectively .

  29. 结果显示:接种0.5h后即有少量病菌存在于根表细胞间隙和导管间隙,但寄主表皮细胞和维管束结构基本完好;

    Only a few bacteria were present in the intercellular spaces of epidermal tissue and the spaces between vessels 0.5 h after the inoculation , the epidermal ceils and vascular tissue , however , were virtually unaffected .

  30. 在第1,5,8和11染色体上检测到4个控制穗颈大维管束数的QTL,在第5,9和10染色体上检测到3个控制穗颈小维管束数的QTL;

    Four QTLs for the number of large vascular bundles in peduncle were detected on chromosomes 1 , 5 , 8 and 11 , respectively . Three QTLs for the number of small vascular bundles in peduncle were mapped on chromosomes 5 , 9 and 10 , respectively .