原孢子

Archesporium The single cell or group of plant cells in the sporophyte from which spore mother cells may eventually develop in a sporangium.

archesporium 孢原细胞：植物孢子体中的单个细胞或单组细胞。在那里孢子母细胞最终发育为孢子囊。

In the late of April of the second year, male inflorescences unbound and pollinated. When female inflorescences accepted the pollen grains, ovary development was increased in early May. With the development of either of the two ovule, funiculus, integument and nucellus were differentiated. Embryo sac mother cell came into being and the meiosis begins. Then fuctional megaspore developed into matured embryo sac that contain eight nucleuses. In the end of May, double fertilization generated.

次年，4月下旬，雄花序解螺旋散粉，雌花序开花授粉；5月上旬，雌花序授粉后，迅速增长，子房膨大，两个胚珠分化出珠柄、珠被和珠心，珠心中产生孢原细胞；5月中下旬，大孢子母细胞形成并减数分裂，功能性大孢子形成成熟的八核胚囊；5月底，发生双受精。

Protonema growth and gametophyte development of Encalypta ciliata are observed based on the cultivation of spore germination.

孢子的基础上，对其孢子萌发、原丝体发育及配子体发生的全过程进行了观察、描绘和照相。

Although the megagametophyte formed and even the double fertilization had been finished 70 days after pollination at normal temperature, the megasporogenesis had not yet been finished at low temperature.

低温(12-18℃)处理的蝴蝶兰，授粉50d开始分化胚珠原基、60 d胚囊处于大孢子母细胞时期，比常温(20-25℃)下的推迟10-15 d；授粉70 d，常温下的蝴蝶兰植株已完成雌配子体发育和双受精，而低温处理的蝴蝶兰仍未完成大孢子的发生过程。

In the functional cell such as archesporial cell,megasporocyte,dyad,tetrad and youngmegaspore,among which the three cells close to micropyle end do not degeneratewholly,no clear starch grains were observed as well as in the embryo sacs from singlenucleate embryo sac to 8-nucleate one just forming.

淀粉粒变化有规律性，在孢原细胞、大孢子母细胞、二分体、四分体和早期的大孢子（即四分体中近珠孔端的3个细胞未完全退化）等功能性细胞中未观察到明显的淀粉粒。

This article reviews domestic and abroad studies on the types of spore germination,characteristics of protonema development and effects of environmental factors . It also presents the latest progress in this field from 1990s, such as the action mechanisms of Ca 2+·CAM signal system, plant hormones and light sign...

本文综述苔藓植物孢子萌发类型、原丝体发育特征以及环境影响因子等，还介绍了 2 0世纪90年代以来该领域研究的新进展，如人们以苔藓植物原丝体为实验材料进一步揭示Ca2 +·CAM信号系统、、植物激素、光信号系统等在植物体内的作用机制

The primary rhizoid exists or not. At the end, the characteristics of the protonema growth is analyzed and discussed. The sporeling type of E. ciliata is primarily named as Encalypta-type.

同时，还对大帽藓原丝体发育的特征进行了分析和讨论，初步确定大帽藓孢子萌发属于新的孢子萌发类型——大帽藓型（Encalypta-type）。

Sinense, the spores germinate inside their exospores and then divide into massive protonemata;the massive protonemata can form two kinds of protonemata of which one is clubbed protonema with papillae,and the other is caulonema composed of long and cylindrical cells ; the gametophyte archaeocytes only occur on the massive protonemata.

结果表明：中华缩叶藓的孢子在壁内萌发，随后分裂产生块状原丝体；块状原丝体上可产生两种丝状体，一种是具疣的棒状原丝体，另一种是由长圆柱状细胞组成的轴丝体；配子体原始细胞只产生于块状原丝体上。

Could be observed on 10th day after pollination, archesporial cell on 20thday, megasporocyte on 24th day, the functional megaspore on 30th day; and 8-nucleate embryo sac on 41th day. And then double fertilization finish and early globular embryo emerg.

授粉10 d出现指状突起，20 d形成胚珠原基，24 d大孢子母细胞发生，30 d功能大孢子形成，41 d发育为成熟的八核胚囊，而后完成双受精发育成早期球形胚。

Light microscope was employed to observe spore germination, protonemal development, gametophyte differentiation of Ptychomitrium sinense indoor cultured. The results showed that in P.

：通过室内人工培养中华缩叶藓的孢子，在光学显微镜下详细观察了其孢子萌发、原丝体发育及配子体发生的全过程。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。