The process of pollen tube growth involves many aspects, especially the synthesis of cell wall and the cytoplasmic movements.
花粉管的生长过程包括许多方面，其中最为重要的是花粉管细胞壁的合成和胞质运动。
After entering the pollen tube, the generative cell approached the vegetative nucleus before long and sticked each other.
当生殖细胞进人花粉管后，在较短的时间内接近营养核，并与其相贴合。
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