番茄大、小孢子的发生及雌、雄配子体的发育

研究了番茄大、小孢子的发生及雌、雄配子体的发育。结果表明：番茄花粉母细胞的胞质分裂为同时型。小孢子四分体呈正四面体型，番茄绒毡层细胞是同型的，均来自初生壁内层，为腺质绒毛层，小孢子继续发育２－细胞花粉：营养细胞和生殖细胞，雌蕊为湿型柱头、实心花柱、倒生胚珠、单珠被，胚囊母细胞经减数分裂形成直线排列的四分孢子，珠孔端１个继续发育为功能大孢子，其余３个退化。胚衰发育为苡蓼形。

Microsporogenesis, Megasporogenesis and Male, Female GametophyteDevelopment in Tomato (Lycopersion esculentum)

Microsporognesis, megasporogenesis and development of male, female gametophyte in tomato(L. esculentum) were studied. The result showed that the cytokinesis of the pollen mether cell in meiosiswas of the simultaneous type. The arrangement of microspores in the tetrads was regular tetrahedroid. Thetapetum cell in tomato was the same tupe and was derived from the primary parietal cell, the modle oftapetum was glandular tapetum. The microspore was divided into two-cell polln(male gametophyte): onevegetative cell and one genrative cell. The stigma was wet type, the style was solid, anatropous ovule, sin-gle integument. The tetrads from the meiosis of megaspore mether cell lined staightly, but only the tap onenear micropyle could developed into the megaspore and other three cell degenerated. The developmet ofthe embryo sac (female gamtophyte) conformed with the polygonum type.