archesporium

A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.

孢原细胞处于珠心表皮之下, 直接起大孢子母细胞的功能.

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The archesporium in its pistils directly developed into megaspore mother cells, which later divided into macrospores through meiosis.

孢原细胞直接发育成大孢子母细胞，然后大孢子母细胞减数分裂形成大孢子。

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The result were as follows: The embryonic development began in the nucellus tissue from a archesporium cell which would divide to a sporogenous cell and a parietal cell.

结果表明：锥栗胚胎发育始于珠心组织中的一枚孢原细胞。

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The archesporium is divided into a parietal cell and a sporogenous cell, by the periclinal division.

孢原细胞进行平周分裂形成一个周缘细胞和一个造孢细胞。

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The female archesporium differentiates from many cells under the subhypodermis of nucellus.

雌性孢原为珠心亚表皮下多细胞。

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Hypodermal archesporium is 2 or 3 cells; a single cell well developed into megaspore mother cell. Undergoes meiotic divisions, produces a linear tetrad.

大孢子孢原细胞2~3个，其中1个发育为大孢子母细胞，大孢子母细胞减数分裂形成直线四分体，合点端的大孢子为功能大孢子，珠孔端3个大孢子退化。

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Megasporogenesis and Female Gametogenesis: Archesporium is of one cell, it directly functions as macrospore mother cell.

大孢子和雌配子体发生：孢原为一个细胞，它直接起大孢子母细胞功能。

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The polarity in the mature egg is prominent ( 4) Microspore archesporium is of multicellular, the anther wall conforms to basic type, and the tapetum is glandular.

小孢子孢原为多细胞，药壁为基本型，具腺质绒毡层；

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