The variation of the FDC showed clear phased cell division patterns during the daily examination with the maximum value of FDC in the daytime (about 20%) and the minimum value in night (about 5%).

• 结果表明，微囊藻的细胞分裂频率有明显的日变化规律，即白天高，最大值约为20%25；夜晚低，最小值约为5%25。