采用扫描电子显微镜（ＳＥＭ）对二倍体、三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。结果表明：三种甜菜花粉在花粉粒的形状、萌发器官类型及表面纹饰等主要性状上均为相同；不同染色体倍性品种的花粉之间，在花粉粒的体积、萌发孔的数量、孔口直径和孔膜表面纹饰等方面亦有一定差别。 The morphology of pollen of diploid, triploid and tetraploid beet was observed by scanning electron microscopy (SEM). Scanning photography and characterization were performed simultaneously. The results showed that the three beet pollens were the same in pollen grain shape, germinating organ type and surface ornamentation. The pollen grains of different ploidy varieties were different in pollen grain size, the number of germinating holes, Diameter and pore surface decoration and so there are some differences.