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Number of nucleoli in diploids and polyploids of the genus Achillea L.
- Dąbrowska, Janina
- Acta Societatis Botanicorum Poloniae 1989 v.58 no.4 pp. 541-548
- Achillea, cell nucleolus, diploidy, interphase, octaploidy, root meristems
- Nucleoli were counted in 9228 interphase nuclei of the apical root meristem of 40 Achillea L. taxa (di-, tetra-. hexa- and octoploids). It was established that the distribution of nucleoli number in an interphase nucleus can be used as a rough practical indicator to distinguish between diploids and polyploids. The highest number of nucleoli (12) was found in an octoploid Achillea pannonica, but only in a small percentage of the nuclei (0.3% out of 283 nuclei).