bundle sheath 中文意思是什麼
bundle sheath
解釋
維管束鞘-
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。 -
There are many adaptive changes in the two research subjects ( artemisia. songarica schrenk. and seriphidium. santolinum ( schrenk ) polijak. ) in morphology and anatomy, such as with the increase of the daily age, the root - shoots ratio increased ; the root became stronger ; the ratio of leaf volume and leaf area increased ; the volume of epidermic cell decreased ; the cut - icle and phellem layer on the surface of root thickened. stoma caved in leaf ; epidermal hair of leaf and stem well - developed, palisde tissue developed well, the cell gap decreased ; the spongy tissue disappeared ; leaf is kinds of isolateralthat is the typical xeromorphic structure ; crystal cell and fibric cell increased ; conducting tissue and mechanical tissue developed well ; bundle sheath appeared
實驗研究的兩種菊科（ compositae ）植物（準噶爾沙蒿（ artemisiasongaricaschrenk ）和沙漠絹蒿（ seriphidiumsantolinum （ schrenk ） poljak . ） ） ，形態解剖方面的變化表現為：隨日齡增加，根長/株高比值日益增大；根系逐漸發達；體積與葉面積比逐漸增大；表皮細胞體積變小；角質層增厚；根外部出現加厚的木栓層；氣孔下陷；葉、莖部的表皮毛密布，柵欄組織日益發達；而細胞間隙日漸變小；海綿組織逐漸消失；葉面結構常為典型旱生結構? ?等葉面；晶細胞及纖維細胞數目增多；輸導組織、機械組織日漸發達；具有維管束鞘等等。 -
Palisade tissue is rich in saliferous vacuoles, while vascular bundle sheath is obvious
柵欄組織富含含鹽液泡泡，維管束鞘明顯。 -
Examples include male and female plants in dioecious species, aerial and submerged leaves, alternation of gametophyte and sporophyte stages of a life cycle, and mesophyll and bundle - sheath chloroplasts
例如在雌雄異株物種中的雌性植物和雄性植物，氣生的和被水浸沒的葉片，生活史中的配子體與孢子體的交替，葉肉和維管束鞘葉綠體等。 -
Vascular bundle sheath
維管束鞘 -
The sheath of connective tissue enclosing a bundle of nerve fibers
經來膜包裹住神經纖維的膜狀結締組織 -
There are 2 - 3 layers of long - column - shaped palisade tissue under the upper epidermis, and there are a great number of mechanical tissues which made up of vascular bundle sheath
上表皮下方有2 - 3層長柱形的柵欄組織，在主脈大側脈外方具有由大量機械組織組成的束帽或束鞘。 -
Bundle sheath the ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf
維管束鞘：在被子植物葉中，圍繞維管束的通常是一層薄壁或厚壁細胞。 -
The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana, but form starch grains
它的特點為：圍繞在維管組織外層的維管束薄壁細胞較大，並含有較大的葉綠體，這些葉綠體中不含基粒，但形成澱粉粒。
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