绒毡层：维管植物花粉囊内包围孢子母细胞的富含营养物质的一层结构。
Tapetum (pl. tapeta) A food-rich layer surrounding the spore mother cells in the anthers of vascular plants.
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。
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。
After entering the pollen tube, the generative cell approached the vegetative nucleus before long and sticked each other.
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