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。
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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