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的富含营养物的一层结构。

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

花粉行减数裂，裂属同时型，产生小孢体，为面体形。

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

每个孢囊中有许多小孢,它们各自经减数裂后,产生个单倍体的小孢。

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离法，成功地离到了水稻第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.

当芽形成裂解后，一种晶体被释放出来，形成自由的伴晶体，另一种在芽外壁内侧形成，成熟后被包裹在芽外壁以内不脱落，始终和芽粘连在一起。