xylem parenchyma 中文意思是什麼

xylem parenchyma 解釋
木薄壁組織
  • xylem : n. 【植物;植物學】木質部。 xylem ray 木射線。
  • parenchyma : n. 【解剖學】腺細胞組織,實質,主質;【植物;植物學】柔組織,薄壁組織。-l, -tous adj.
  1. 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。
  2. Secondary xylem consists of pitted vessels, parenchyma fibers and rays.

    次生木質部由孔紋導管、薄壁組織及射線所組成。
  3. It consists principally of xylem and phloem ( water and food - conducting tissues respectively ), and also contains strengthening tissue ( sclerenchyma ) and packing tissue ( parenchyma )

    它主要包括木質部和韌皮部(分別運輸水分和養料) ,還含有機械組織(厚壁組織)和填充組織(薄壁組織) 。
  4. They are common in many situations, for example as gland cells and epidermal cells, and in xylem and phloem parenchyma, where they are concerned with active loading and unloading of vessels and sieve tubes

    許多情況下都有傳遞細胞發揮作用,例如:腺細胞和表皮細胞,還有木質部和韌皮部的薄壁細胞,該處導管和篩管的主動裝填和排空都與傳遞細胞有關。
  5. The secondary phloem parenchyma cells and secondary phloem ray parenchyma cells were the preferential sites for protein storage to the xylem parenchyma cells whereas a large amount of vegetative storage proteins was present in xylem, especially in the primary xylem and the inner secondary xylem of the extended stems

    營養貯藏蛋白質優先在次生韌皮部的韌皮薄壁細胞和韌皮射線薄壁細胞中積累,在新梢伸長生長停止后,新梢基部莖的木質部中也積累了相當數量的營養貯藏蛋白質,主要分佈在初生木質部和內側次生木質部的各種生活的薄壁細胞中。
  6. 8 the pith made of small parenchyma cells was long - oval, however the pith looked like a cross which devided the preliminary xylem into four parts was made of larger parenchyma cells. 9 there are well - developed aerenchyma in suaeda salsa, including large sub - stomatal chambers and intercellular spaces in palisade layer, spaces produced by lysigenous breakdown of cortical cells in stem and roots

    侶)髓在對照中僅由有限數目的較小的薄壁細胞構成,髓的形狀表現為長橢圓形, 50 、 100 、 200 、 400inmnaci處理下,髓中的薄壁細胞較大,細胞數目較多,髓呈「十」字形,將初生木質部分割為四部分,這一特殊現象在前人的工作中尚未報道。
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