The foundation period .Maize: Shull(1905-09); East(1908): Inbred lines- Single cross Shull(1914): The term HETEROSIS for hybrid vigor Jones(1918): Double cross H.A. Wallace: Pioneer Hi-Bred Corn Conpany The Development period . Maize: 1920-1960s Double cross/Three-way cross/Single cross . Sorghum: Three-line hybrid; Use of cms-System, 1950s Rice: Heterotic Hybrid rice, three-line system The Father Yuan Longping, 1964-1972 .Rape: Hybrid Rapeseed, three-line types; The Father Li Dianrong: The 1st hybrid rape variety The Pioneer Fu Tingdong: The Polima cms .Other crops: More and moreThe Foundation Period •Maize: Shull(1905-09); East(1908): Inbred lines - Single cross Shull (1914): The term HETEROSIS for hybrid vigor Jones(1918 ): Double cross H. A. Wallace: Pioneer Hi-Bred Corn Conpany The Development Period •Maize: 1920-1960’s Double cross/Three-way cross/Single cross •Sorghum: Three-line hybrid; Use of cms-System, 1950’s •Rice: Heterotic Hybrid rice, three-line system The Father Yuan Longping, 1964-1972 •Rape: Hybrid Rapeseed, three-line types; The Father Li Dianrong: The 1st hybrid rape variety The Pioneer Fu Tingdong: The Polima cms •Other Crops: More and more