The biological characterization of the border cell,and the effects of different concentrations of Fe2 + and different time on livability of border cells and PME activity of root cap were studied.

• 以相对耐铁的水稻品种"中优9288"和敏感品种"汕优10号"作为实验材料,研究了铁毒对水稻离体边缘细胞的影响。