During the meiosis of microspore mother cells, the amount of starches apparently increased in parenchyma around vascular bundle but there were no starches in tapetal and middle layer cells.

• 在减数分裂时期，药隔薄壁细胞中积累的淀粉粒明显增多，绒毡层细胞中仍然没有淀粉粒。