核辐射创造的高配合力水稻种质扬稻6号的应用

辐射诱变育成的水稻新品种扬稻6号在每穗总粒数、每穗实粒数、结实率、千粒重、籽粒充实度、单株产量等产量构成性状上的一般配合力和特殊配合力显著高于其它参试恢复系,对“两系”不育系和“三系”红莲型不育系具有配制出超高产杂交稻组合的特殊配合能力,其丰产、优质、多抗性能推进了以其作恢复系所配制杂交稻组合,及以其作亲本选育常规水稻品种和恢复系“水涨船高”的发展。

UTILIZATION OF AN ELITE RICE GERMPLASM-YANDAO 6 WITH HIGH COMBINING ABILITY CREATED BY ~(60)Co γ-IRRADIATION

Yangdao 6,a new rice variety bred by irradiation induced mutation,is an elite Indica germplasm with a higher general combining ability(GCA) and specific combining ability(SCA) compared with other restorer lines in yield composing traits,including total grains per panicle,filling grains per panicle,seed setting,1000-grain weight,grain plumpness,yield per plant,etc.Used as a parent with high yield,good quality and multi-resistance,it has a good probability for breeding super-high-yield hybrid combinations both for the "two-line" and Honglian-type CMS lines.And as a restorer line,it accelerates both the breeding of hybrid combinations and routine cultivars with a mode of "boat goes up as river rises".