| Anthers, microspores and pollen were analysed in planta from archesporium formation to anther dehiscence, using various cyto-histological techniques. |
| The archesporium arises by the next divisions in the outer layer of cells, and thus extends over the summit of the columella. |
| In non-heading Chinese cabbage CMS lines, anther development was inhibited at the archesporium cell stage, in which the flower size is smaller than 0.5 mm, and no anther sac was formed to produce normal sporogenous cells. |
