Abstract:Dioscorea on sexual reproduction at different sowing methods, different sowing the seed germination rate, flowering and growth habits and other biological characteristics were observed. The highest germination rate environment in the Petri dish, seed germination rate in mid-April the highest annual Dioscorea plant sexual reproduction than thin, it is recommended after emergence fertilizer to promote growth of the ground area, thus speeding up the sexual Reproduction of dry matter and saponin accumulation. Another root of the sexual reproduction of measured yield and saponin content, analysis of experimental data, obtained the separation of sexual reproduction is quite serious, with three years in plant sexual reproduction than its index of annual and biennial to be higher , in particular, up to 2.60% saponin content. Therefore, sexual reproduction for the breeding of Dioscorea provides a very rich material of genetic variation, for us to have fine goal from selected plant traits, in production, sexual reproduction of Dioscorea economic benefits of the highest three-year old plants.
Key words: Dioscrea zingiberensis C.H.Wright;Sexual propagation;Diosgenin content