利用恢复材料９２７作为恢复基因供体，与常规高产品种特青杂交，经多年跟踪测交，选育出与优ＩＡ配组表现优势强的恢复系４７６１。其组合优ＩＡ／４７６１经贵州省１９９４年杂稻区试，平均每ｈｍ２产量达８６８５ｋｇ，两年平均产量比对照汕优６３增产４．７３％，联合方差分析达显著和极显著水平。经１９９５年和１９９６年的多点生产试验，结果也表现优于对照 Using restorer 927 as restorer gene donor, crossed with conventional high - yielding variety Teqing, the restorer line 4761 was selected for breeding with superior IA group after many years of follow - up test. The combination of IA / 4761 by the Guizhou Province in 1994 hybrid rice area test, the average yield per hm2 up to 8685kg, two-year average yield increased 4.73% compared with the control Shanyou 63, joint variance analysis reached significant and highly significant level. The results also outperformed the controls by the multi-site production trials of 1995 and 1996