药室内壁

小麦药壁表皮细胞与药室内壁细胞超微结构

Ultrastructure of Epidermis and Endothecium Cells of Auther Wall in Wheat

表皮、药室内壁和中层细胞含有淀粉粒；

Cells of epidermis , endothecium and middle layers contain starch grains .

花药壁厚薄不均，药室内壁与中层细胞无明显区分；

There was little difference between endothecium and mid-layer of anther cell .

药室内壁部分纤维状加厚。

The epidermis and part of endothecium persist ;

药室内壁有带状加厚现象；

The endothecium develops fibular thickenings .

药室内壁、中层层数增加，绒毡层细胞肥大，造孢细胞或花粉母细胞分解解体；⑤由于花粉母细胞胼胝质壁不降解而无法释放出四分体小孢子；

Cell layers of powder chamber wall and middle-level were increased , tapetum cells were hypertrophied and microsporogenesis or microspore disaggregated ;

药室内壁细胞在发育后期进行径向条纹加厚，至花药开裂时仍保留着原生质体。

In later development stages some fibrous thickenings appear on the walls of endothecium cells , in which the protoplast remains until anther dehiscence .

药室内壁（纤维层）不是1层细胞而是2～3层；中间层直至开花期花药将要开裂时仍然存在。

The endothecium or fibrage consisted of 2-3 layers , and the middle layers still existed when anther was going to burst at the florescence stage .

说明花药壁包括药室内壁、中层细胞和绒毡层的异常发育可能是导致花药败育的原因之一。

Description anther wall , including the abnormal development of endothecium , middle cells and tapetum cells may be the reasons of the anther abortion . 3 .

花药壁由五至六层结构组成，表皮，药室内壁，2至3层中层，绒毡层为分泌型。

The anther wall comprises 5 or 6 layers : the outermost epidermis , a layer of endothecium , 2 or 3 middle layers and a secretory tapetum .

花药药室内壁细胞与对照组相比较，其在二核期和三核期条纹状加厚较为明显，细胞形状较清晰。

Anther endothecium cells are more obvious thicker of the stripe-like than the control group in the binucleate pollen stage and trinucleate pollen stage , and cells ' shape more clearer .

采用圆光栅在药室内壁滚动的方法测量药室长度，根据直径和长度数据求得药室的容积；对各测量参数的精度进行了理论上的分析。

The chamber length is measured by means of rolling round optical grating in the inner wall of chamber , and then chamber volume can be calculated with its diameter and length .

在雄花中，花药4室，药壁发育为双子叶型，由表皮、药室内壁，一层中层和绒毡层组成。

In male flowers , the anther has four chambers . The development of anther wall is dicotyledonous type which is composed of epidermis , endothecium , one layer of middle layer and amoeboid tapetum .

花药壁由5层细胞组成，最外层为表皮，其内分别为药室内壁、中层（2层）、绒毡层，绒毡层为变形型绒毡层，花药壁的发育属于基本型。

The anther wall was composed of five layers , epidermis , endothecium , middle layer ( two layers ) and tapetum respectively . It belonged to basic type , and the tapetum is amoeboid type .

花药壁的发育属基本型，药壁由5层细胞组成，即：表皮、药室内壁、中层、绒毡层。

The development of anther wall follows the Basic type , and the anther wall consists of five layers of cells : an epidermis , an endothecium , 2 middle layers and single & layered tapetum .

在减数分裂过程中，绒毡层细胞中没有颗粒状的淀粉粒出现，但药室内壁和药隔薄壁组织细胞中的淀粉粒积累达到高峰，在表皮细胞中也可见少量淀粉粒积累。

In meiosis stage of the microspore mother cell , starch granules do not appear in tapetum cells but reached a peak accumulation in the connective tissue and endothecium cells . In epidermal cells can be found in a small amount of starch grain .