Mitotic squash preparations
Mitotic squash preparations were carried out on root tip meristems of the investigated taxa. Roots were generated by sowing the bulbs of the investigated taxa of Allium in sand. Roots of Allium tuberosum were collected from germinated seedlings. Root tips of the related taxa of Allium were collected from the potted plants. All the root tips were collected at the periods showing peak mitotic frequency i.e. between