家蚕胚胎发育过程的组织形态学研究

家蚕胚胎发育过程的组织形态学研究对家蚕胚胎发育研究具有重要作用。将不同发育时期的家蚕卵经软化卵壳后进行石蜡切片和HE染色观察,获得了家蚕胚盘形成、胚带形成、中胚层分化、头胸部突起明显、腹部突起显现、反转前、反转时、反转后和器官形成等典型胚胎发育时期的形态图片;用连续切片技术观察到了类原始生殖细胞存在于中胚层突起处。

Study on the Morphology of Embryonic Development States in Silkworm,Bombyx mori

It is very important for research of embryonic development in silkworm to investigate the morphology of embryonic development states. In this paper, a series of embryonic microphotographs at representative developmental stages have been obtained, including stages of blastderm formation, germband formation, mesoderm differentiation, appearance of gnathal and thoracic appendages, appearance of abdominal appendages, early blastokinesis, middle blastokinesis, final blastokinesis, completion of organs and tissues. Moreover, process of yolk cleavage was surveyed. The primordial germ-like cells were observed in mesoderm by method of serial cross section.