威优测50(V20A×测50-1),1984年由江西省赣州地区农科所育成。其恢复系测　50-1-是从IR9224-117-2-8-3群体中经多代测交筛选育成的。该组合属早籼稻迟熟类型,在江西作早稻全生育期123天左右,作中稻130天左右,作晚稻105-110天。 　　该组合1984年作早稻进入新组合预试,亩产470公 Granville measured 50 (V20A × measured 50 - 1), 1984 by the Jiangxi Provincial Department of Agriculture bred. The restorer line 50-1- is derived from the population of IR9224-117-2-8-3 by multiple generations of cross-selection screens. The combination is a late-mature indica rice type, early rice in Jiangxi for the whole growth period of about 123 days for about 130 days of middle rice, 105-110 days for late rice. The combination of early rice in 1984 for the new combination of pre-test, 470 acres per mu