1.Synthesis of lipidic components in anthers, including of the pollen extine, is essential for plant male reproductive development.
花药中脂质成分（包括花粉外壁）的合成对植物雄性生殖发育是必需的。
2.Except for some continuous changes, the morphology and extine sculpture of pollens from different populations were similar.
不同天然居群间花粉形态、外壁纹饰类似，但也具有一定的连续变化。
3.However, differences exist in pollen size, aperture, extine thickness and ornamentation.
但在花粉大小、萌发孔形状、外壁厚度以及表面纹饰等方面存在差异。
4.with the extine ornamentation being finely reticulate or microperforate.
外壁具细网状纹饰或具小穿孔。
5.The ornamentation of extine is reticulate, reticulate-microperforate or microperforate.
外壁纹饰网状，某些种尚具或为细小的穿孔。
6.Pollen morphology and its extine ultrastructure of the Zygophyllaceae in China.
中国蒺藜科花粉形态及其外壁超微结构。
7.All these results indicate that MS1142 gene plays important roles in pollen development and extine pattern formation.
以上结果说明MS1142基因在小孢子的发育及花粉外壁形成过程中起重要作用。
8.pollen 3-nucleate, extine tectum finely striate.
花粉3核酸盐，外壁覆盖层细条纹。
9.But the spores of 6 species are similar in shape, extine thickness and size.
但六种孢子的形态、大小、外壁厚度等方面具有较大的相似性。
10.The pollen morphology and extine ultrastructure of Paeonia L. in China.
中国芍药属花粉形态及其外壁超微结构的观察。