outer integument

The micropyle is formed with inner integuments and partial outer integument .

珠孔由内珠被和腹侧外珠被构成。

Cotton fiber cell is single-celled and originates from the epidemic of the outer integument of ovule .

棉花纤维细胞是棉花胚珠外珠被表皮细胞经分化突起和极性伸长而成的单细胞。

The study reveals that cotton fiber is epidermal hair , epidermal cell of ovule outer integument from cotton fiber . And cotton fiber cell possesses the similar molecule regulating mode as the growth of epidermal hair cell in Arabidopsis .

棉花纤维是胚珠外珠被表皮细胞发育延伸而成的表皮毛，棉花纤维细胞的发育与拟南芥表皮毛发育模式相似。