花粉外壁 meaning in English
extine
Examples
- The results were as follows . the shape of pollen was ellipsoid or long ellipsoid , and the pollen exine usually had net structure
结果表明，水仙属植物的花粉形状主要为椭圆体、长椭圆体，花粉外壁为网状纹饰。 - During the late microspore stage , a big vacuole formed and the nucleus was forced to move to peripheral region
当小孢子被释放出后，钙颗粒开始特异性积累在正在形成的花粉外壁中，尤其在萌发孔的部位聚集了大量的钙颗粒。