籼型水稻恢复系广恢305的选育及利用

Breeding and Utilization of Indica Rice Restorer Line Guanghui 305

广恢305是以华占为母本,自选材料R710/R501为父本杂交,经过多年系谱选择、抗性鉴定和测交筛选育成的籼稻恢复系,具有米质优、稻瘟病抗性强、恢复谱广、后期转色顺畅、杂种优势强等优点。利用其配组的杂交组合五优305、越两优305、泰优305、广8优305和广和优305等通过了省级或国家级品种审定,并表现出优势强、抗病性好、适应性广、后期转色顺畅等优点,具有较好的应用前景。

Guanghui 305, developed by crossing Huazhan as the female parent with the breeding material R710/R501 through years of pedigree selection, resistance identification and heterosis evaluation, is an indica rice restorer line. It has the advantages of fine grain quality, strong blast resistance, wide restoring spectrum, smooth discoloring in the maturing stage and strong heterosis. The hybrid combinations derived from it such as Wuyou 305, Yueliangyou 305, Taiyou 305, and Guang 8 You 305 and Guangheyou 305, registered and released for commercial production by provincial or national crop variety appraisal committees, perform well in high yield, good disease resistance, fine grain quality, wide adaptability and smooth discoloring in the maturing stage, etc., showing a promising prospective application.