一、棉花纤维的发生每根棉纤维是一个植物单细胞,它是从胚珠(后来长成种子)的表皮细胞突起、延伸和发展而成(如图1)。在花冠开放前,所有胚珠的表面都很光滑,表明纤维细胞尚未发生。花冠张开,到受精之前,胚珠的表皮便有细胞突起,这就是棉纤维的初生细胞,后来成为初生胞壁。突起的细胞,一部分长成棉纤维,另一部分成为小花衣,亦即短绒(光子棉例外)。未受精的胚珠,不久死亡,成为不孕籽。其 First, the occurrence of cotton fiber Each cotton fiber is a plant single cell, which is from the ovule (then grow into the seed) of the epidermal cells protruding, extending and development made (Figure 1). The surface of all ovules was smooth before the corolla was opened, indicating that the fibroblasts have not yet occurred. Corolla open, before fertilization, ovule cells have cell protrusions, which is the primary cell of cotton fiber, and later became the primary cell wall. Prominent cells, some grow into cotton fibers, the other part of a small flower, that is, short fiber (photon cotton exception). Unfertilized ovules, died shortly after becoming infertile seeds. its