周皮

施用乙烯利和6-苄基腺嘌呤（BA）都不能引起创伤周皮形成，但BA能促进伤害诱导的创伤周皮细胞层数目增加。

Experiments also showed ethrel and N 6 - benzyl-adenine ( BA ) did not induce wound periderm , but the cell layer number of wound periderm increased when BA was applied .

割伤或刮伤都能诱导形成创伤周皮，而在伤口施用JA和IND，JA可能不参与诱导创伤周皮的形成。

Bark cutting or scraping could induce formation of wound periderm . The experiments of application of JA and IND seemed to indicate that JA was not involved in the induction of wound periderm formation .

PAS反应对多糖的组织化学定位结果显示在两种远志根的次生韧皮部和周皮中都有多糖物质的积累。

PAS reaction results showed polysaccharide were also existed in root periderm and secondary phloem of the two plants .

树皮结构与病情关系比较复杂，主要表现在以下几个方面：（1）周皮厚度与感病指数呈负相关。

The thickness of periderm was negatively to the disease index .

具有次生结构，次生保护组织为周皮。

It had secondary structure and the secondary protective tissue was periderm .

秦艽根中特殊周皮的研究

The study of special periderms in the root of Gentiana macrophylla Pall

根的次生结构包括周皮和次生维管组织两部分。

The secondary structure included periderm and secondary vascular tissue .

大约经12&14天，不定根原基发育为幼小不定根并伸出周皮之外。

After 12-14 days , adventitious root primordia developed into young adventitious roots .

由中柱鞘产生侧根及周皮。

The pericycle produces the latent roots and periderm .

结果表明，美登木根的次生结构由周皮和维管组织构成；

The secondary structure of the root consisted of periderm and vascular cylinders .

紫胶虫四种寄主树次生韧皮部与周皮的解剖学观察

The anatomy of secondary phloem and periderm of four host tree species of Laccifer lacca

它以周皮代替表皮。

The periderm of root replaces epidermis .

7种寄主植物周皮到韧皮部的距离都在紫胶蚧口针达到范围之内；

Kerria lacca 's mouthparts can reach the secondary phloem of all 7 host trees .

周皮和薄壁贮藏组织中的含量较低，在休眠后期也有所增加。

The contents of cytokinins were low in periderm and parenchyma , but increased during dormancy release .

周皮泡期；

Stage of periderm bubbles .

次生生长后产生周皮、皮孔和次生维管组织。

Periderm , lenticelle and secondary vascular tissue in the gynophore are produced due to its secondary growth .

而光敏感型的津田芜菁肉质根周皮中，只有光处理有大量花青素合成，暗处理几乎无花青素合成。

There was almost no anthocyanin synthesized in light-interrupted cortex tissue of tuberous root of light-independent ' Tsuda ' turnip .

本文就树干注入农药，对木质部、韧皮部及周皮和整个树体是否产生不良影响做出评价。

The harmful effect of injecting chemical into tree on the xylem , bast , periderm and tree body was studied .

⑶在较长时间停止割胶（如冬季停割）时形成防卫结构创伤周皮。

And wound periderm formed after long period rest of tapping , such as in the rest period of tapping in winter .

大约15天左右在愈伤组织近表面细胞中发生木栓形成层，以后迅速形成正常的周皮。

About 15 days after girdling , a cork cambium developed near the surface of callus , then developed normal periderm rapidly .

树皮伤口在一次割胶后不再继续割胶，约6天后，永久的防卫结构创伤周皮逐渐形成，同时，伤口树皮中的生化防护物质几丁质酶也逐渐消失。

Six days after wounding by a latex exploitation , while wound periderm gradually developed , the activities of endochitinase and P-1,3-glucanase disappeared .

结果表明：不同直径大小的横走侧根均由周皮、次生维管组织和四原型的初生木质部构成。

The results showed that all the cross branch roots of different sizes consisted of periderm , secondary vascular tissue and tetrarch primary xylem .

结果表明，在解剖横切面上，栽培与野生丹参根的周皮、韧皮部、木质部具有显著差异。

The results showed that the root transactions had significant differences in periderm , phloem , and xylem between cultivated and wild Salvia miltiorrhiza .

黄檗幼树根韧皮部和茎干基部的韧皮部中主要药用成分含量很高，而叶片、木质部和周皮很低。

The alkaloid contents were highest in root and stem base phloem of Amur corktree saplings , and lower in leaves , xylem and periderm .

周皮由新木栓层、旧木栓层以及新旧木栓层之间被挤压的皮层等颓废组织组成。初步推测，杜仲树皮的变异是由遗传水平上的变化引起的。

The periderm was composed of new phellem , older phellem and the cortex which was pressed by both new and older layers of phellem .

周皮分化明显，周皮、韧皮部易与木质部分离，射线明显。

The periderm differentiation is obvious , and the periderm , the bast separate easily with the xylem . The beam is obvious , too .

结果表明：桤木茎的次生构造从外至内由周皮、皮层和次生维管组织3部分组成。

The results show that the secondary structure of alder stems were composed of three parts from periphery to center on the cross section , e.

凹叶厚朴的树皮由外向内为周皮、皮层、初生韧皮部的纤维束和次生韧皮部。

The bark structure of Magnolia biloba , from external to internal parts , includes periderm , cortex , fibre bundies of primary phloem and secondary phloem .

其差异首先表现在木栓层结构上：光皮型杜仲的周皮明显比其余3种类型树皮薄，木栓层层数少；

Firstly , difference on the phellem : the periderm of smooth type was distinctly thinner than the other three types'bark , its number of layer was few ;

因此，北柴胡根的次生结构从外到内由周皮、中柱鞘薄壁细胞环和次生维管组织组成。

Therefore , the secondary structure included periderm , pericyclic parenchyma tissue and secondary vascular tissue from the outside to the inside of taproots of Bupleurum chinense DC .