Fig. 5: Suppression of SlMYB33 disturbs pollen maturity.
From: The GAMYB-like gene SlMYB33 mediates flowering and pollen development in tomato

Transverse sections of flower buds at the microspore mother cell stage (a, f), tetrad stage (b, g), uninucleate microspore stage (c, h), binucleate microspore stage (d, i), and mature pollen stage (e, j) in WT and RNAi-10. MMC microspore mother cell, T tapetum, Tds tetrads, UMsp uninucleate microspore, BP binucleate pollen, MP mature pollen. Bars = 50 μm