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1·The protein staining of tube nucleus is the darkest, and the antheridial nucleus is the next.

管核的蛋白质染色反应最深，生殖核次之。

2·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。