archesporial

archesporial

1. The one megaspore archesporial under the nucellar epidermal cell differentiate directly into megaspore mother cell, the meiosis of megaspore mother cell are nomally.

大孢子孢原细胞在直接发育为大孢子母细胞，大孢子母细胞减数分裂正常，四分体直线型；

2. The single megaspore archesporial cell origins from nucellus hypodermal layer and becomes the megaspore mother cell directly, which as tenuinucellate.

大孢子孢原细胞起源于珠心次表皮层，并直接行使大孢子母细胞功能，为薄珠心。

3. archesporial cell

孢原细胞

4. The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte.

孢原细胞位于珠心表皮之下，直接起大孢子母细胞的功能。

5. The archesporial cells differentiated from single archesporium, the meiosis of microspore mother cells were continuous type and tetrads were tetrahedral.

小孢子母细胞减数分裂为连续型，形成的四分体为四面体型排列；

6. The megasporogenesis in Psathyrostachys huashanica begins with archesporial cell.

摘要华山新麦草大孢子发生始于孢原细胞。

7. Fur hermore there are double archesporial cells and double embryo sacs in Psathyrostachys huashanica.

此外，在华山新麦草中发现有双孢原细胞及双胚囊的现象。

8. distinct areas of archesporial cells

清晰白孢原细胞区