FIGURE 17.1
Microspores of tobacco. (A) Late uninucleate microspores. Vacuole can be seen on right side
of cell. (B) Anaphase of first pollen mitosis. (C) Early binucleate microspore. Large diffuse vegetative nucleus
and smaller, more darkly staining generative nucleus can be distinguished. (D) Mid-binucleate microspore.
Staining is darker, obscuring vegetative nucleus, but the generative nucleus is still visible. (From Trigiano,
R.N. and D.J. Gray, eds. 2000.
Plant Tissue Culture Concepts and Laboratory Exercises
, 2
nd
edition. CRC
Press, Boca Raton, FL.)