中文摘要：

对可育系和雄性不育系万寿菊的大、小孢子发生及雌、雄配子体发育过程进行了系统地比较观察。结果表明：可育系和不育系万寿菊雌蕊的发育基本相同，二者的雌蕊为二心皮一室，每室1胚珠，单珠被，薄珠心，倒生型胚珠。大孢子母细胞经减数分裂形成线形排列的4个大孢子，合点端为功能大孢子。胚囊发育类型为蓼型。可育系小孢子母细胞经过减数分裂形成阳面体形的四分体，成熟花粉是二细胞型，表面有刺。其花药为四室，药壁发育属双子叶型，腺质绒毡层。雄性不育系万寿菊特化小花在花芽分化时即没有产生雄蕊原基，因而不具雄蕊结构，为结构型雄性不育。

英文摘要：

A series of researches were studied on megasporogenesis, microsporogenesis and the development of male and female gametophytes in fertile line and male sterile line＇ s flowers of Tagetes erecta L. by the paraffin sectioning method. The cytological observation showed that the ovaries of both fertile line and male sterile line had one chamber, each of which had one ovule that was unitegmic, tenuinucellate and anatropous. After meio- sis, the megasporoeytes divided into four linearly arrayed megaspores, the ones of which at chalazal end usually had functional capacity. The development of embryo sacs belonged to polygonum type. The microsporic tetrads of the fertile line belonged to the tetrahedral type, and mature pollen was two-celled with bristles on the surface. The anthers of the fertile line had four microsporangiates, and the development of anther wall was of dicotyledon- ous type and the tapetum belonged to glandular type. The anther＇ s development of male sterile line was blocked at the stage of flower bud differentiation. There was not the primordium of stamen in male sterile line＇ s mutative floret during the diflbrentiation.