甘薯是我国重要的粮食与经济作物,有关它的受精方面的研究,目前国内尚未见有正式报道,为了提供甘薯受精生物学方面的资料,探讨甘薯结实率低的原因,并为育种工作提供理论依据,我们在进行可亲合的杂交组合(母本高自一号×父本88-3)授粉后,采取不同时期的应用常规材料,制片方法并结合薄切片技术(GMA)及组织化学方法,对甘薯的受精过程做了初步的观察,结果如下:甘薯的成熟胚囊由一个卵,二个助细胞(图3)和二个极核所构成,反足细胞较早退化。助细胞为狭长形,其珠孔端壁上具丝状器,细胞壁呈不规则的加厚,从珠孔端至合点端壁 Sweet potato is an important food and economic crop in China. For its research on fertilization, there is no official report yet in China. In order to provide biological information on sweet potato fertilization, the reasons for low seed setting rate of sweet potato and the theory of breeding are provided Based on these data, we used conventional materials, methods of production combined with thin-section technique (GMA) and histochemistry at different stages after pollination of an inbred crosses (female parent No.1 × male parent 88-3) The results showed as follows: The mature embryo sac of sweet potato consisted of one egg, two helper cells (Fig. 3) and two polar nuclei, and the antipodal cells degenerated earlier. The helper cells are slender and long, with a filamentous device on the end wall of the peritoneal cavity. The cell wall is irregularly thickened,