摘要
0 引 言由于银杏(ＧｉｎｋｇｏｂｉｌｏｂａＬ.)独特的系统学地位及精子结构的特殊性,对银杏生殖生物学的研究工作一直是裸子植物胚胎学研究的热点之一[1～12]。这些研究表明,银杏精原细胞从产生到最后形成精子历时3个月左右[1～5]。在此期间,其体积增大数倍,结构发生了...
During the nearly three month period of differentiation and development of the spermatocyte of the Ginkgo biloba , the spermatocyte nucleus had changed from spherical\| to spindle\| and back again to spherical\| shaped in succession. As the nucleus was at the spindle\|shaped stage, blepharoplast, vacuole\|like structures and fibrillogranular body appeared in its cytoplasm, the former two were symmetrically arranged along the nucleus, while the fibrillogranular body was situated in the proximal face, Such arrangement may play a most important role in the regulation and in consequence may lead to the anticlinal division of the spermatocyte. The newly formed spermatozoids which stood against each other along their flat faces, had 3～4 levo\|rotated gyres of flagellates as one of the end. The vacuole\|like structure in each of the spermatozoid laid either at the proximal or distal face, or alternatively.The newly formed spermatozoid with the appearance of the fertilization drop was a very important phenomenon for getting spermatozoid of Ginkgo biloba efficiently.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第6期859-865,共7页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金!资助项目 ( 3 5 970 0 4 8)
关键词
银杏
精原细胞
精子
液泡状结构
生殖生物学
Ginkgo biloba
spermatocyte
spermotozoid
vacuole\|like structure
