tracheid

A.yuanbaoshanensis showed great difference with other Abies species in tracheid diameter and rays height.

元宝山冷杉在管胞直径与射线长度方面与其它冷杉有显著差异。

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The tracheid and sieve tube elements are all differentiated from the procambia in the center of the haustoria, and the former occurs prior to the latter.

吸器中管胞和筛管都是从吸器中央具有原形成层特性的细胞分化的，管胞的分化先于筛管，或同时进行。

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The tinct of the spore and the mycelium. Libriform fibres and tracheid fibres were septate.

4菌丝体以及分生孢子的颜色变化。纤维和纤维管胞均有横隔。

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A study on wood tracheid morphological features and radial variation of Korean spruce ( Picea koraiensis nakai) plantations

人工林红皮云杉木材管胞形态及其径向变异的研究

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A kind of silicified fossil wood with mixed pits on the radial tracheid wall is described.

报道了一种具混合型纹孔(互列式纹孔和对列式纹孔)的化石木.

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The negative relationship of wood basic density with tracheid width and tracheid length were not significant.

木材基本密度与纤维宽度、纤维长度呈不显著的负相关。

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The relation of tracheid and the density of wood were direct proportion.

管胞长度与木材密度的相关关系为正相关。

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The volatile material increased in xylem after the PWN invaded. The blockage of water conduction caused by tracheid cavitation was very important factor causing the death of infected pine trees.

松树感染松材线虫后，木质部内挥发性物质增加，管胞中形成了空洞，致使松树体内水分输导受阻，松树萎蔫死亡。

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wood anatomy characteristics including tracheid length, tracheid diameter, rays height and frequency, cross field pits types and numbers were studied.

从管胞分子长度、管胞分子直径、射线高度、射线频率、纹孔类型、交叉场纹孔类型、交叉场纹孔数目等方面，比较了它们木材解剖特征的差异。

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Vessel and fibre-tracheid are both spiral thickening distinctly.

导管与纤维管胞均具明显的螺纹加厚。

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As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.

造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。

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