Abstract
The meiotic behavior of a monoploid plant of sugarbeet (Beta vulgaris L.) was studied. At meta-anaphase I univalents, bivalents and trivalents, and secondary associations of up to three chromosomes were observed, with an average of 8.65 I + 0.16 II + 0.01 III per cell or 0.18 chiasmata per cell. Chromosomes migrated to the poles at anaphase I in all possible numerical groupings. Various numbers of laggards, dividing laggards, bridges, and fragments occurred at both divisions. It appears that two or more duplications are present in the genome of this monoploid plant.