The Rôle of the Nucleolus in the Formation of Spireme in the Pollen Mother Cells of Hibiscus mutabilis Linn

抄録

1. In the early prophase the nucleolus shows a deeper peripheral region and a central lightly stained one.
2. During prophase the nucleolus contributes chromatin by budding to the developing spireme thread.
3. During the synizetic stage the nucleolus gets vacuolate instead of diminishing in size.