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甘薯（ＩｐｏｍｏｅａｂａｔａｔａｓＬａｍ．）成熟花粉为二细胞型，在授粉后萌发之前生殖细胞分裂形成精细胞。仍在花粉粒中的两个精细胞大小和形状基本相似，细胞质中含丰富的质体和线粒体。细胞质ＤＮＡ特异荧光显示精细胞及产生它们的前细胞———生殖细胞中均含有丰富的类核。一对精细胞中类核的数量无明显的差异。精细胞中存在两种形态类核，大而荧光强的类核可能为质体类核，而小的荧光弱的类核为线粒体类核。双亲或父系质体遗传在被子植物中是少数，本研究结果为旋花科的除牵牛属和打碗花属外又提供了新的一属具这种遗传方式的细胞学证据。
The mature pollen of Ipomoea batatum Lam. Is a two-cell type and germ cells divide to form sperm cells before germination after pollination. The size and shape of two sperm cells that are still in pollen grains are similar, with abundant plastids and mitochondria in the cytoplasm. Cytoplasmic DNA-specific fluorescence shows sperm cells and their progenitor cells - germ cells are rich in nuclei. A pair of sperm nuclei in the number of no significant difference. There are two kinds of morphological nuclei in sperm cells. The large and strongly fluorescent nuclei may be plastid nuclei, while the small, weak fluorescent nuclei are mitochondrial nuclei. The parental or paternal plastid inheritance is a minority in angiosperms. The results of this study provide a new genus of cytology evidence for the genera of the family Convolvulaceae, in addition to the head of the genus Callistra and the genus Callisto.