xylem 中文意思是什麼
xylem
解釋
n. 名詞 【植物；植物學】木質部。xylem ray 木射線。
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The annual rings of plants growing in temperate climates can be seen in crosssection as two consecutive rings of light and dark - colored xylem tissue
在有顯著季節性氣候的地區中，不少植物的次生木質部在正常情況下，每年形成一輪（色淺層和色深層） 。 -
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。 -
Observation and study of vessel elements of secondary xylem in bombax malabaricum
次生木質部導管分子觀察研究 -
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。 -
Capillarity ( capillary action ) the rise or fall of liquids in narrow tubes as a result of the surface tension of the liquid, which causes the water to adhere to solid surfaces, such as soil particles or the walls of xylem vessels
毛細現象（毛細管作用） ：由液體表面張力引起的液體在細管中上升或下降的現象，毛細現象引起水和固體表面的粘合作用，例如土壤顆粒或木質部導管壁。 -
Anatomy of the vessel elements and perforation plates in the secondary xylem of casuarina cunninghamiana
細枝木麻黃導管分子及穿孔板解剖學研究 -
Effects of xylem cavitation and embolism on plants
木質部空穴和栓塞化對植物的影響 -
The xylem of ferns and conifers contains only tracheids.
蕨類植物和針葉樹的木質部僅含有管胞。 -
Flavones formed from xylem stem of dracaena cochinchinensis by co - culture of fungus strain and bacteria strain
真菌共代謝轉化龍血樹木質形成黃酮類化合物 -
Haplostele a type of protostele having a solid strand of stele with the xylem on the inside encircled by phloem, pericycle, and endodermis
單中柱：原生中柱的一種類型，是由韌皮部、中柱鞘和內皮層包圍著內方的木質部構成的實心中柱。 -
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。 -
Vascular plants plants containing differentiated cells forming conducting tissue ( vascular tissue, also known as fascicular tissue ), which comprises the xylem and phloem
維管植物：具有能夠形成體內運輸組織（維管組織：包括木質部和韌皮部）的分化細胞的植物。 -
The hphr has more vascular bundles and a much bigger area of single vascular bundle, total vascular bundle, total phloem and total xylem in the first internode than shanyou 63
結果表明，重穗型組合的大維管束數目、單個維管束面積及維管束總面積、韌皮部總面積均明顯高於汕優63 。 -
Observation on the vessel elements of secondary xylem in jackfruit artocarpus heterophyllus
菠蘿蜜次生木質部導管分子觀察 -
Video cytological image analysis system and micrography were adopted to examine vessel elements in secondary xylem of phyllanthus emblica
摘要運用細胞圖象分析系統及顯微照相的方法，對余甘子次生木質部導管分子進行觀察研究。 -
The vessel elements of secondary xylem in litchi chinensis are observed and studied by bio - microscope image analysis system and micrography
摘要運用細胞圖像分析系統及顯微照相的方法，對荔枝次生木質部導管分子進行了觀察研究。 -
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。 -
The results showed that the root transactions had significant differences in periderm, phloem, and xylem between cultivated and wild salvia miltiorrhiza
結果表明，在解剖橫切面上，栽培與野生丹參根的周皮、韌皮部、木質部具有顯著差異。 -
In cultivated salvia miltiorrhiza roots, light - colored periderm contained less layers of cells and low ratio of phloem to xylem, compared with those in wild salvia rniltiorrhiza roots
栽培丹參根的周皮細胞層數少、色淡，韌皮部與木質部比值小，而野生丹參根的周皮細胞層數多、顏色重，韌皮部與木質部比值大。 -
Thickness of upper and lower epidermis of leaves, width of xylem and phloem of annual and biennial branches, ratio of late wood to early wood, periderm thickness of biennial branches, and length of xylem ray present decreasing trends with latitude ascending ; while ratio of palisade tissue to spongy tissue, epidermis thickness of annual branches, and cortex thickness of biennial branches show unobvious variations with latitude increasing
葉的上下表皮厚度、 1和2年生枝木質部及韌皮部寬度、晚材早材比值、 2年生枝的周皮厚度、木射線長等均隨緯度升高而呈下降趨勢；而葉的柵欄組織和海綿組織比值、 1年生枝表皮厚度、 2年生皮層厚度等解剖結構隨緯度變化沒有明顯規律。
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