Figure 4

Representative 2-DE images for total anther proteins of wild-type (WT) and PGMS mutant (MT) cotton ( Gossypium hirsutum L.) at the TTP, UNP and BNP stages. Silver-stained reference maps of the WT at TTP (A), MT at TTP (B), WT at UNP (C), MT at UNP (D), WT at BNP (E) and MT at BNP (F). Each differential protein spot was marked with an arrow and number. The spots with lower intensities in the MT are showed in (A), (C), and (E), and the spots with higher intensities are shown in (B), (D), and (F). The white arrows indicate unidentified spots.