Some large vacuoles appeared in the tapetal cells of the sterile anthers at the early uninucleate pollen stage.

在单核细胞早期，不的四分体细胞中有较明显的大液泡。

Abbreviation: T: Tapetal; N: Nucleus; TE：Tetrad; TW: Wall of tapetal cell; V: V acuole; D: Dictyosome; C: Callose; M: Mitochondria.

毡层细胞，N：细胞核，TE:四分体，TW：毡层细胞壁，V：液胞,D：高尔基体，C：胼胝质壁，M：线粒体。