Features of the glandular apparatus of Mentha arvensis L. plants of different geographical origin

The parameters of the secretory apparatus of three species, one form and two varieties belonging to M. arvensis L. different geographical origin were studied. Glandular apparatus is represented by a 10-cell secretory glands and 3-cell hairs. The major aromatic trichomes and a high density of their arrangement on both sides differed tetraploid form of M. arvensis of the natural flora of Vietnam. This provided the highest yield of essential oil (4.73%). By the number, size and density of the essential oil secretory glands of the most promising for breeding are tetraploid form of M. arvensis of the natural flora of Vietnam and M. arvensis var. piperascens of the natural flora of the island of Taiwan.