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tracheid n.【植物;植物學】管胞。adj.-al

tracheitis

These genera and ephedra also hve advanced tracheids with a structure reminiscent of angiosperm vessels , whereas in other gymnosperms the xylem is composed solely of more primitive tracheids 這些屬以及麻黃屬植物和被子植物一樣有進化的管胞,而其他的裸子植物的木質部只由很多導管組成。

Tranfusion tissue is present in the leaf of yew . it is composed of three sorts of cells : transfusion tracheids , transfusion parenchyma cells , and albuminous cells 在紅豆杉的葉子中存在傳輸組織,它由傳輸細胞、傳輸薄壁組織細胞和蛋白細胞組成。

Tsuga dumosa richer : the regular presence of ray tracheids . axial parenchyma cells rare and distribute in the boundaries of growth rings 云南鐵杉( tsugadumosaeicher ) :生長輪明顯,早材至晚材略急變至漸變。

Fiber - tracheid an elongated cell with bordered pits found in wood , intermediate in form between a fiber and a tracheid 纖維管胞:木材中具有具緣紋孔的細長細胞,是纖維和管胞的中間類型。

Where they occur interspersed with the xylem they may be distinguished from tracheids by their narrower lumen 纖維分布與木質部相似,其狹窄的腔可與管胞區分開來。

Annular thickening rings of thickening laid down on the inner wall of protoxylem vessels and tracheids 環狀加厚:原生木質部導管和管胞的內層環狀?厚。

A review : current international research into cell wall mechanics of tracheids 管胞細胞壁力學研究進展評述

Bordered pits on tracheids radial walls uni - seriate and bi - seriate rows 交叉場1 - 4枚杉木型紋孔。

Ray tracheid walls smooth or with minute dentations 木射線具單列射線和紡錘狀射線。

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。