红莲型杂交稻不育系珞红3A及其组合珞优8号的选育与利用

Breeding and Application of Honglian Type Hybrid Rice Luoyou 8 and Sterile Line Luohong 3A

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.

Luohong 3A as a new sterile line of Honglian type is derived from the new maintainer line Luohong 3B,which was treated with γ-ray radiation.A series of outstanding new combinations were bred using Luohong 3A,of which Luoyou 8,a new combination of Honglian type hybrid rice,is derived from the cross of Luohong 3A and R8108.Luoyou 8 shows a lot of excellent characteristics such as more tillers,compact plant,thick stem,dark green leaves,flag leaf straight,good quality and so on.