孢子細(xì)胞的

The megasporogenesis in Psathyrostachys huashanica begins with archesporial cell. 摘要華山新麥草大孢子發(fā)生始于孢原細(xì)胞。

The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte. 孢原細(xì)胞位于珠心表皮之下，直接起大孢子母細(xì)胞的功能。

The single megaspore archesporial cell origins from nucellus hypodermal layer and becomes the megaspore mother cell directly, which as tenuinucellate. 大孢子孢原細(xì)胞起源于珠心次表皮層，并直接行使大孢子母細(xì)胞功能，為薄珠心。

The one megaspore archesporial under the nucellar epidermal cell differentiate directly into megaspore mother cell, the meiosis of megaspore mother cell are nomally. 大孢子孢原細(xì)胞在直接發(fā)育為大孢子母細(xì)胞，大孢子母細(xì)胞減數(shù)分裂正常，四分體直線型；

The archesporial cells differentiated from single archesporium, the meiosis of microspore mother cells were continuous type and tetrads were tetrahedral. 小孢子母細(xì)胞減數(shù)分裂為連續(xù)型，形成的四分體為四面體型排列；