Abstract
1. The satellite of the nucleolar chromosome of Allium istulosum is sometimeseliminated. The variety “Wakeginebuka” is heterozygous for deficiency of satellites (SS-) and some plants of the variety “Kujonegi” homozygous (S-S-)
2. The meiosis, mitosis, and some characters of the variants and its progenies were studied.
3. The elimination of the satellite may occur through mitotic processes.
4. In the root-tip cells of one exceptional plants (SS-), two different karyotypes were found in a chimeral state.
5. The effects of pyrogallol on mitosis were reinvestigated by the use of SS- karyotyped plants.
