K second mitotic division stage
Term Information
- Accession
- PO:0001015
- Aspect
- plant structure development stage
- Synonyms
- related: pollen stage 9 in Arabidopsis
- exact: tricellular pollen development stage
- exact: tricellular pollen stage
- Definition
- A pollen development stage (PO:0001007) during which the generative cell (PO:0020097) undergoes mitotic division to form two male gametes, the pollen sperm cells (PO:0025121). [source: POC:Laurel_Cooper, TAIR:Katica_Ilic]
- Comment
- In taxa with mature two-celled pollen (PO:0025281), the second mitotic division takes place after pollen germination (GO:0009846), in the germinating pollen tube cell (PO:0025195). Note: This term overlaps with the GO BP term: generative cell mitosis (GO:0055047): The process in which the generative cell divides by mitosis to form two haploid cells. These will subsequently differentiate into sperm cells.
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