优质水稻恢复系万恢88选育及应用

［目的］选育高配合力、强恢复力、强优势和强适应性的三系杂交稻恢复系。［方法］采用常规育种技术的复交辅以辐射育种构建2个基础群体，将云南粳稻704与IR1544杂交，经4年7代稳定后，再与基础群体万中3号杂交，采用系谱选育、配合力育种、稻瘟病自然诱发和接种鉴定相结合的方法育成万恢88，并对其品种特征特性进行测定。［结果］万恢88具有配合力高、产量水平突出、恢复力强、抗逆性突出和制种性状好等特性。配组育成的6个杂交稻新组合冈优88、K优88、万香1号、万优6号、陵优1号和万优9号已通过重庆市审定，并在生产上推广应用面积达55万hm^2以上。［结论］籼粳优质恢复系万恢88具有杂种优势强，高产、稳产、广适的特点，取得了较大的社会和经济效益。

Breeding and Application of Good-quality Rice Restorer Line Wanhui 88

[Objective] The purpose was to breed three-line hybrid rice restorer line with high combining ability,strong restoring ability,strong heterosis and strong adaptability.[Method] Two basic populations were constructed by multiple cross of conventional breeding techniques assisted by radiation breeding.Yunnan japonica 704 was hybridized with IR1544.After stability for 4 years 7 generations,the hybrid progeny was hybridized with Wanzhong 3 of basic population.Wanhui 88 was selected by pedigree breeding,combinin...