Morphological chracters of pollen grains of diploid, triploid and te-traploid sugarbeets were examined by scanning electron Microscope( SEM).

• 采用扫描电子显微镜（EM）二倍体、倍体和四倍体甜菜的花粉进行了形态观察，同时进行了扫描摄影及特征描述。