Fig. 2
From: Stomata variation in the process of polyploidization in Chinese chive (Allium tuberosum)
Different ploidy levels and chromosome numbers of Chinese chives (scale bar = 20 μm). a Diploid chromosome number (2n = 2x = 16). b Triploid chromosome number (2n = 3x = 24). c Tetraploid chromosome number (2n = 4x = 32). d-f Pentaploid chromosome number (2n = 34, 40, and 42). g-i Hexaploid chromosome number (2n = 44, 46, and 48)