root hair造句
例句与造句
- The root hair cell wall invaginates at the point of contact .
在接触点上，根毛细胞壁内凹。 - The specialized epidermal area of the roots from which the root hairs arise is termed the piliferous layer
根毛出现在根表皮的特化区域，称为根毛层。 - On the condition of flooding , the root hair of vetiver was decreased significantly and the color of root system became black
淹水条件下，香根草根毛显著减少，根系颜色随淹水深度增加而变深。 - The elongation cell afterwardsstarts to split up , forms the root hair , the drive pipe and so on thedifferent structure , thereupon plant ' s root then grew maturely
伸长的细胞随后开始分化，形成根毛、导管等不同结构，于是植物的根便发育成熟了。 - Absorption 1 . the uptake of liquid by cells and organs . in plants , water and mineral salts are absorbed mainly by the root hairs , just behind the root tips
吸收（作用） : 1通过细胞或器官吸收液体。在植物中，水和矿质元素主要是通过位于根尖后方位置的根毛吸收的。 - It's difficult to find root hair in a sentence. 用root hair造句挺难的
- The percentage of rooted leaf explants was 92 . 5 % 21 days after infection , but the inducing frequency of hairy roots was 53 . 8 % . hairy roots were highly branched and had a plenty of white root hairs
其中转化毛状根的频率为53 . 8 ，毛状根呈密集丛生状、多分枝，被大量白色细绒毛。 - At concentration of 10mg / l , the root of k . candel seedling were wide and short , had few or no root hairs . especially for n ap , above 70 % of roots turned rotten and black , others were half rotten
暴污60d后，在10mg l浓度组，幼苗根系粗而短，根毛稀少或没有，尤其是nap处理的幼苗70以上根发生腐烂发黑，其余亦处半腐烂状况。 - 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
结果表明：气生不定根具有以下结构特征和发育特点： ( 1 )根为二原型，侧根正对着木质部发生； ( 2 )幼根内皮层细胞具凯氏带加厚，维管柱内紧挨中柱鞘内侧具有2 ~ 4层大型薄壁细胞； ( 2 )根中无髓和树脂道； ( 4 )次生结构发生于根毛区，维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成； ( 5 )中柱鞘和栓内层细胞富含单宁类物质； ( 6 )次生韧皮部有石细胞，次生木质部射线发达。