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.