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1选育经过B优827是西南科技大学于1991年用早籼型优质保持系L301B与早籼型抗病保持系地谷B进行有性杂交,当年在海南种植F1,F3选优系与L301A成对测交,经连续回交选择至1996年选定803A优系。1998年用803A与四川农业大学水稻研究所选育的中籼恢复系蜀恢527配组育成中籼迟熟优质杂?
1 Breeding After B You 827 is Southwest University of Science and Technology in 1991 with early indica-type high-quality maintainer line L301B and early indica type of resistance to maintain the Department of Valley B sexual hybridization, then planted in Hainan F1, F3 and L301A Paired pairs of tests, the choice of continuous back to 1996 selected 803A excellent system. In 1998 with 803A and Sichuan Agricultural University Rice Research Institute of indica restorer line Shuhui 527 with medium-late indica late maturity high quality miscellaneous?