Fig. 9. Comparison of the rhizoid characters of wild type and Pphb7 disruptant with or without NAA. (A) Frequency distributions of the light transmittance of rhizoids in the wild-type (white bars) and Pphb7dis-3 (gray bars) gametophores. The red, blue, and green channels from RGB images are shown. The means and standard deviations are indicated in brackets (n=100). (B) The number of chloroplasts per cell at each cell position from the rhizoid apical cell in the wild type (white circles) and Pphb7dis-3 (gray circles) (n=10). Bars indicate the standard deviations. (C) Frequency distribution of chloroplast size in rhizoid cells from the wild type (white bars) and Pphb7dis-3 (gray bars). The means and standard deviations are indicated in brackets (n=100).