Figure 1.

Fertility observation in the process of fertility transition for WXA. (A) Mature, normal anthers of WXS (F) observed by stereo microscope. (B) Mature anthers of WXS (F) stained darkly with 1% potassium iodide solution (I₂-KI). (C) Mature anthers of WXS (S) observed by stereo microscope. (D) Mature anthers of WXS (S) stained with 1% potassium iodide solution (I₂-KI). Carbol fuchsin dyeing of the WXS (S) (E,a–d) and WXS (F) (E,e–l) microsporocytes from the pollen mother cell formation stage to the pollen meiosis stage. a, e, f were considered the pollen mother cell formation stage; b, c, g, h, i, j, k were considered the meiosis stage; d, l were considered the mononuclear stage.