velamen [və'leimən]

velamen的基本解释

n.

膜, 被膜

与velamen相关的网络例句 [注：此内容来源于网络，仅供参考]

Strain AR-15 penetrated the exodermal passage cells through the velamen cells or root hairs and further infected the cortical cells. There were a number of spores and hyphae in plant roots that was damaged by strain AR-15. Study on the ultrastructure of D. nobile root and its endomycorrhizal formationshowed that the wall of velamen cells of D. nobile root was thin, and there were waxylayers outside of velamen. Cells of exodermis were arranged tidily, having thick wallsand chloroplast.

金钗石斛根及其菌根的超微结构研究表明，金钗石斛根的根被细胞薄壁，在最外层根被细胞之外覆盖着蜡质层，外皮层细胞排列整齐，细胞壁厚，内含叶绿体，靠近外皮层的皮层细胞含叶绿体、线粒体，皮层细胞壁薄，细胞核明显，周围有叶绿体围绕，细胞膜附近有小泡结构。

Results There were differences in shape and layers of velamen cell, number of xylem bundles, maximum diameter of vessels, organization of pith, as well as the types, quantity, and size of crystals. D. fimbriatum could be distingushed from its adulterant species D.

结果根被细胞的形状及皮层厚度，中柱的木质部束数、导管的直径、髓的构成，晶体的类型与大小存在种间差异。

Mycorrhizal fungi enter the velamen and exodermis through root hair, invade the cortical tissue by the exodermal passage cells and then form pelotons.

独花兰具有典型的兰科植物菌根构造，在光学显微镜下可以观察到菌根真菌从根毛进入根被和外皮层，通过通道细胞侵入到皮层薄壁组织，在皮层薄壁细胞内形成菌丝团。

与velamen相关的网络解释 [注：此内容来源于网络，仅供参考]

velamen：根被

如洋葱 无根毛.根的这些特征是和它的吸收,固着等作用密切有关.根的表皮,一般是由一层活细 胞组成的,但也有例外,在热带的兰科植物和一些附生的天南星科植物的气生根中,表皮是 多层的,形成所谓根被(velamen).根被是由紧密排列的死细胞组成的鞘,

velamen：膜

vein 静脉 | velamen 膜 | vellication 肌震颤

velamen：帆

vela 缘膜 | velamen 帆 | velamina 根被

velamen：根皮

vel-velamfibre 维尔维兰纤维 | velamen 根皮 | velamentousinsertion 脐带帆状附着 帆状附着

velamen;velamen radicum;root-sheath：根被

有脉的 veiny | 根被 velamen;velamen radicum;root-sheath | 菌膜 velar