Breeding and application of a new aromatic hybrid rice combination Xiangliangyou 875 with fine grain quality.

Xiangliangyou 875,i.e.,360S/Qianxianghui 875,is a new aromatic hybrid rice combination.The female parent 360S is an aromatic PTGMS line and the male parent Qianxianghui 875 is also an aromatic restorer line which is derived from multiple crosses of Ce 64-7(an indica restorer line),Jasmine-85(an aromatic American rice),Minghui 86(an indica restorer line)and a Guizhou native japonica variety.The hybrid combination had a good performance in the regional trials and production trials of Guizhou Provice during 2004 and 2006.It yielded 8 647.5 kg/hm2 in the regional trials and 8 346.2 kg/hm2 in the production trials on average,similar to the check hybrids Jinyou 77 and Jinyou 207.It has a high grain quality meeting to the 3rd class of national standards for fine quality rice.In the Hybrid Rice Taste Identification Meetings of Guizhou Province in 2007 and 2008,it was ranked No.1 in both years.In 2008,it was certified and released to commercial production in Guizhou Province.It could achieve a yield of 3 750 kg/hm2 under the condition of a good synchronization of flowering between both parents in its hybrid seed production.It would also have a high economic value in the application of aromatic rice production.