Histogen theory A theory, proposed by Hanstein, in which the apical meristem is considered to consist of three main zones, the dermatogen, periblem, and plerome, which differentiate into the epidermis, cortex, and stele respectively.

組織原學說：是由 Hanstein 提出的理論欧美一级特黄色视频，認為頂端分生組織是由三個主要區(qū)域組成18禁黄无遮挡免费网站大全欲色，表皮原免费看一级大黄片、皮層原和中柱原91上海人妻系列网站，隨后它們各自分化為表皮屄屄网址，皮層和中柱。

Although both of FDRMADS7 and FDRMADS8 wereexpressed in the root, they have different expression pattern.The transcripts of FDRMADS7 weredetected throughout the root,especially the expression in the root meristem was the highest.However,the expression of FDRMADS8 was mainly localized in elongation and mature rigion.No apparent expression signal was detected in the root cap, root meristem and pericycle cells.

雖然FDRMADS7和FDRMADS8都在根中表達三级片毛片AV网站，但它們在根中的表達模式也不相同：FDRMADS7在根中到處表達色爱看网站，尤以生長點處表達量最高国产A片免费高清2018；而FDRMADS8在伸長區(qū)和根毛區(qū)的皮層中有大量表達，在根冠超碰在线免费视，根尖分生區(qū)和根毛區(qū)的中柱鞘細胞中卻無明顯表達国产黄片免费在线播放，暗示它們在根中行使的功能也不相同。

The promeristem is consisted of three groups of initial cells, which have typical cytological characteristics of meristem cells. The primary meristem is composed of calyptrogens, primordial epidermises, periblems and pleromes. Both the calyptrogens and the primordial epidermises initiate from the same layer of initial cells.

原分生組織由3群原始細胞組成型男操干美女破处视频网站，其細胞具有典型分生組織的細胞學特征欧美性爱亚洲日韩；初生分生組織包括根冠原、表皮原88黄色网站、皮層原和中柱原自慰福利在线，其中根冠原和表皮原具有相同的起源。

In functional study, overexpression assay was conducted in potato. Interestingly, tuberous swelling along roots was observed in some transgenic potato lines in addition to stem-derived tuber formation. Conclusively, we propose a hypothesis to illustrate the mechanism by which IbMADS1 participates in the initiation of tuberization in sweet potato.

利用解剖切片觀察并比較轉殖馬鈴薯與野生型甘薯的根部塊狀膨大區(qū)域国产黄色亚洲，可以發(fā)現(xiàn)兩者在膨大初期日本天堂网2019，中柱內(nèi)含的細胞數(shù)皆增多，尤其是木質(zhì)部細胞出現(xiàn)不正常增生情形avttyazhou，進而擴展中柱區(qū)域国产黄色网站A；因此，我們可以初步推論在甘薯塊根發(fā)育初期亚洲中文字幕超碰97，IbMADS1藉著作用於根部分生組織啪啪啪色免费网站，尤其是中柱的原始形成層，從而促進細胞分裂黄色网站免费a，并參與甘薯的初期結薯淫插视频一区二区三区。

medullary cavity：髓腔

在分枝的頂端常產(chǎn)生孢子葉球,如在內(nèi)皮層里面,維管束對脊而生,排列成環(huán),每維管束為外始式,木質(zhì)部不甚發(fā)達,維管束下有氣腔,稱脊腔(carinal cavity)或稱維管束腔,為原生木質(zhì)部破裂所形成,莖中央為大空腔,稱髓腔(medullary cavity),故木賊型的中柱被

meristele：分體中柱

meridional cleavage 經(jīng)裂 | meristele 分體中柱 | meristem 分生組織

meristele：分生中柱

merispore 分裂孢子 | meristele 分生中柱 | meristele 分體中柱