韧皮部

At 21 DAG, the newly established cambium cell started periclinal division, which would result in the production of phloem outwards and xylem inward. The 11-23 immature xylem cell layers beneath the surface continued their differentiation into mature xylem cells.

表面下7-11层未成熟木质部细胞在第7-14 DAG左右脱分化形成新的形成层。21 DAG，再生形成层开始平周分裂，产生新的韧皮部和木质部。11-23层未成熟木质部细胞继续分化为成熟木质部。

The results showed that the phytophagous insects in the spruce forest in Qilian Mountains exhibited obvious vertival stratification structure. According to the amounty of species of each structure, it could be divided into 6 insect communities, namely the insects community of the shrub and herbage (928 species), of the soil and root (780 species), of the tender end and needle (117 species), of the stem phloem and xylem (66 species), of the branch thin end twig shin (38 species), of the blossom and seed and fruit (14 species).

结果表明祁连山区青海云杉林中植食性昆虫具有明显的垂直分层结构，根据林分的垂直结构和昆虫寄生、取食树木组织部位可划分为6个群落，其种类由多到少依次为灌木和草本层昆虫群落（928种），土壤与根部昆虫群落（约780种），嫩梢与针叶昆虫群落（117种），树干韧皮部与木质部昆虫群落（66种）、枝梢与嫩皮昆虫群落（38种）、花与种实昆虫群落（14种）。

Acetone-water at 60℃water bath for 60min and solid to liquid ratio 1:50 for twice. 2.Through the optimal method analysis phenol content in leave,phloem and xylem from the different breeds of Pistacia vera L.

应用阿月浑子总酚最佳的提取工艺条件对不同生长时期阿月浑子和黄连木不同品种的叶片、韧皮部、木质部中的总酚含量动态变化进行分析。

Assaying results indicate that in that eight parts of Acanthopanax senticosus content ofquercetin is highest in leaf,0.03818%, content of quercetin rhamnoside is highest in flower,4.43115%, content of hyperin is highest in flower,2.41605%, content of syringoside is highest inskin of shoot,1.18959%, content of eleutheroside E is highest in root,

含量测定结果表明：在刺五加花蕾、根、叶、果、茎干、新枝、茎韧皮部、茎皮这八个部位中，槲皮素叶中含量最高，为0.03818％；槲皮素鼠李糖苷花蕾中含量最高，为4.43115％；金丝桃苷花蕾中含量最高，为2.41605％；紫丁香苷茎皮中含量最高，为1.18959％；刺五加苷E根中含量最高，为0.18802％。

6The studies on SSR identification of P. shenzhou show that: The leaf, bud, bast and xylem of type A plant had no components of type C, showing that the above-ground of type A was already pure. Type A plant had two kinds of color roots, the rufous roots belonged to type A tissue, the yellow roots belonged to type C tissue through the SSR identification.

6由深州杨SSR鉴定研究可得：深州杨A型植株的叶、芽、韧皮部、木质部已经检测不到深州杨C型的成分，说明深州杨A型的地上部分已经纯合：深州杨A型植株的地下部分含有红褐色和土黄色两种根，经检测，红褐色根是属于深州杨A型的纯合组织，土黄色根是属于深州杨C型的纯合组织。

The main resultsshowed that the ABA in the fruit cells was subcellularly compartmented, and there exists a densitygradient from phloem cells to flesh parenchyma cells.

主要结果表明：果肉细胞中ABA是区隔化分布的；从韧皮部到果肉普通薄壁细胞之间存在ABA从高到低的分布梯度。

The result shows that the resistance of tree species at the same site closely related to the number of vessel, rays' width, radium of lignified cell and wall thickness of sclereids, and the anatomical structure of the same tree species was different at different sites.

结果表明，不同树种在同一立地条件下的导管个数、射线宽度、木化细胞半径及韧皮部石细胞壁的厚度与树种的抗虫性密切相关；同一树种在不同立地条件下其内部解剖结构有所不同。

The result shows that the resistance of tree species at the same site closely related to the number of vessel, rays' width, radium of lignified cell and wall thickness of sclereids, and the anatomical structure of the same tree spec...

结果表明，不同树种在同一立地条件下的导管个数、射线宽度、木化细胞半径及韧皮部石细胞壁的厚度与树种的抗虫性密切相关；同一树种在不同立地条件下其内部解剖结构有所不同。

Phloem peeling machine and degumming technique for raw flax fibre in red soil zone of southern ChinaBased on the physical and mechanical characteristics differences between fresh tegument and stalk,bast fibre cell and nearby cell,a new type of combined peeling and washing machine was designed for the first time in the world.

南方红壤区冬季亚麻韧皮剥制机械及其脱胶技术利用亚麻韧皮部与木质部、韧皮纤维细胞与其周边细胞间机械物理性能的差异，研制出国内外首台家用型反拉式亚麻剥麻洗麻联合机。

Experimental results show that there are existing some indifferent mechanisms to the pollen sterilization of the Ms types: during the period of single nucleic to three nucleic pollen cell,we observed that the cell of xylem and phloem in anther septum abnormally developed,also the cell in the sheath of vascular bundle,smaller and arranged irregularly; the metabolic block developed too,es...

结果表明，不育类型的花粉败育有着一些共同的机理：在花粉单核期至三核期可见到花药隔维管束的木质部及韧皮部细胞发育较差，维管束鞘细胞发育不良，体积较小，排列紊乱；在单核花粉期至三核花粉期均发生物质代谢障碍，特别在花药部位尤为明显；由于维管束发育不良和花药物质代谢障碍，导致了花粉缺乏营养而败育。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。