小孢子

The big, empty and abortive pollen grains are observed at the stage of uninuclear microspore.

单核期小孢子出现壁发育不良和巨大及空花粉现象。

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，细胞分裂属同，生小孢子四分体，为四面体形。

These results indicate that callose metabolism is active and very important not only in microsporogenesis but also in microgametogenesis in rice.

营养细胞细胞中继续积累，花粉成熟对在小孢子形成和发育过程中功能进行了讨论。

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,生四个单倍体小孢子。

The ontogeny of epiphyllous microsporangia Ginkgo indicated that the microsporophyll in Ginkgo is of phyllome origin.Possibly, the epiphyllous microsporangia is a peculiar chimera.

叶生小孢子囊银杏个体发生，表明银杏小孢子叶有叶性来源性，叶生小孢子囊银杏可能是一种奇特嵌合体。

Ubisch bodies and lipid bodies are found in the glandular tapetums. In meiosis of microsporocyte, cytokinesisis is a simultaneous type, which produces an isobilateral tetrad.

小孢子母细胞减数分裂胞分裂为同,生正四面体四分体。