以保持系粤泰B为材料,用γ射线辐射处理,成功选育了红莲型杂交水稻新不育系珞红3A,并以珞红3A为母本,优良恢复系“R8108”为父本配组育成杂交中稻新品种珞优8号.珞优8号表现出分蘖力强、株型紧凑、茎秆粗壮、叶色浓绿、剑叶挺直、后期叶青籽黄等显著特点,在大面积生产示范中平均亩产达到700kg以上,米质达到国家二级优质米标准. In order to maintain the Department of Yuetai B as a material, treated with γ-ray radiation, a new sterile line of Honglian hybrid rice, Luohong 3A, was successfully bred. With the roots of Luohong 3A as female parent and the fine restorer line “R8108” as The male parent was bred to a new hybrid mid-top cultivar Luoyou 8. Luoyou 8 showed strong tillering ability, compact plant type, stalks stout, dark green leaves, upright leaves, Large-scale production demonstration in the average yield of 700kg or more, the quality of the country reached two high-quality rice standards.