毛状体

长白忍冬初生茎表皮有毛状体和腺体的存在。

The primary structure of its stem : There are trichome and glandular scale on the epidermis and not amylum grain in the endodermis .

当通过不同洗涤方法除去烟草属毛状体的分泌物时，毒力降低。

Toxicity was reduced when Nicotiana trichome exudates were removed by various washing methods .

Züst的研究组培育了毛状体（驱逐食草动物的叶毛）和芥子油苷（能抑制害虫的一种化学毒物）的基因被关闭的模式植物拟南芥。

Z ü st 's team grew the model plant Arabidopsis thaliana with the genes for trichomes ( leaf hairs that discourage herbivores ) and glucosinolate ( a chemical toxic to certain pests ) disabled .

原叶体发育为槲蕨型，接种后30d左右进入片状体阶段，毛状体出现在片状体形成之后，幼原叶体短舌状，成熟原叶体心脏形。

The gametophyte development is of the Drynaria type , prothalli formed in 30 days after inoculated in the medium , while hairs developed after the formation of the prothallial plate . The young prothalli are short tongue shaped and the adult prothalli are cordate .

毛状体数量丰富，均为单细胞；

Quantity of hair is large , and each is unicellular .

毛状体为单毛和鳞片毛两种类型。

Trichomes can be divided into two groups , simple trichomes and scales .

原叶体无毛状体，中脉厚，精子器和颈卵器较大；

The prothallium has no trichome but thick midvein , large antherid and archegonium . However , O.

植物形态特征例如毛状体在选择工作中已成功地用作抗虫因素的一种指标。

Plant morphological characters , such as trichomes , have been used successfully as visual surrogates for resistance factors in selection programs .

由于细胞外层薄膜的破坏而导致的细胞溶解或破坏过程。毛状体是叶片、枝条和根的皮层的单细胞或多细胞的外生物。

Breakdown of cells by the destruction of their outer membrane . Trichomes are unicellular or pluricellular outgrowths from the epidermis of leaves , shoots , and roots .

一般来说，柔毛的机械作用取决于毛状体的四个主要性状：密度、直立性、长度和形状。

In general , the purely mechanical effects of the pubescence depend on four main characteristics of the trichomes : density , erectness , length , and shape .

中胶层一种将腔肠动物的内外细胞层分开的胶状物质层毛状体是叶片、枝条和根的皮层的单细胞或多细胞的外生物。

The layer of gelatinous material that separates the inner and outer cell layers of a coelenterate . Trichomes are unicellular or pluricellular outgrowths from the epidermis of leaves , shoots , and roots .

有意义的解剖学特征是：末端石细胞，表皮细胞的晶簇，毛状体，在中脉和叶柄的薄壁组织内的短石细胞以及中脉和叶柄横切面的形状。

Anatomical characters that are of significance are terminal sclereids , druses in epidermal cells , trichomes , brachysclereids in parenchymatous tissues of midribs and petioles , and the shape of midribs and petioles in transverse sections .

下胚轴毛发育后期，在其保留细胞核的膨大的基部和突起的毛状体之间形成一细胞壁，此时毛状体便开始萎缩脱落。

In the beginning of hypocotylar hair formation , the tip of the hair enlarges a little , showing the character of a secretory cell .