The length of generative cell nuclei is 3 . 5 - 20 . 0pm . study method on morphology of generative cells in pollen grains and the evolutionistic tendency of genus camellia base on the morphological character and size of generative cell nuclei was also discussed in this paper 笔者探讨了光学显微镜下观察山茶属花粉粒生殖细胞形态的方法，并根据山茶属植物花粉粒生殖细胞核的形状及大小变化，对其演化的趋势进行了讨论。
