Tapetum (pl. tapeta) A food-rich layer surrounding the spore mother cells in the anthers of vascular plants.

维管植物花粉囊内包围孢子母细胞的富含营养物质的一层结构。

Pollen mother cells undergo meioses through simultaneous cytokinesis and give rise to tetrads of microspores, which are tetrahedrally arranged.

花粉母细胞行减数分裂，细胞质分裂属同时型，产生小孢子四分体，为四面体形。

There are a lot of sporule mother cells in every sporangium, they are respective via meiosis hind, produce the sporule of 4 monoploid.

每个孢子囊中有许多小孢子母细胞,它们各自经减数分裂后,产生四个单倍体的小孢子。

Chromosome 12 of pollen mother cell of japonica trisomic rice (Oryza sativa L.) was successfully isolated using microglassneedles under the micromanipulator in this study.

首次以粳稻第12号三体为材料，采用玻璃针染色体微分离法，成功地分离到了水稻第12号染色体。

One inclusion formed somewhat later exterior to the exosporium. Another inclusion was formed within the exosporium and remained with the spore after mother cell lysis.

当芽胞形成细胞裂解后，一种晶体被释放出来，形成自由的伴胞晶体，另一种在芽胞外壁内侧形成，成熟后被包裹在芽胞外壁以内不脱落，始终和芽胞粘连在一起。