Table 2. Cell sizes and volume of anther cells in control samples. X-axis indicates the cell width, Y-axis cell length, and Z-axis cell depth of epidermis (EPI), endothecium (EN), secondary parietal cell (SPL), middle layer (ML), tapetum (TA), pollen mother cell (PMC), microspore (MP) and pollen grain (PG). Cell volume was obtained by multiplication of X, Y and Z-axes. - Indicate that cells are not appear. ± showed the standard error.