分子标记辅助选育红米巨胚水稻

以正常胚红米水稻"上师大6号"和白米巨胚水稻"上师大5号"作为亲本进行杂交和回交,结合分子标记辅助育种,成功选育出红米巨胚水稻新品系"上师大10号"."上师大10号"的单株重与"上师大5号"差异不显著,但不同地区试种比较结果显示,"上师大10号"产量高于"上师大5号",且生育期较"上师大5号"短4~5 d."上师大10号"的胚重与糙米重比值显著小于"上师大5号",但其胚体积与糙米体积比和"上师大5号"间没有显著差异."上师大10号"的成功培育为市场进一步开发应用红米巨胚水稻提供了物质基础.

Development of red giant embryo rice by molecular marker-assisted selection

In this study,we successfully developed a new rice (Oryza Sativa L.) strain of red giant embryo rice "Shangshida No. 10" by hybridizing a normal embryo red rice "Shangshida No. 6" with a giant embryo white rice "Shangshida No. 5" and backcrossing with "Shangshida No. 5",together by molecular marker-assisted selection. There was no significant difference in the weight per plant between "Shangshida No. 5" and "Shangshida No. 10",but the yield of "Shangshida No. 10" was significantly higher than that of "Shangshida No. 5" as shown in field trials,while growth duration of "Shangshida No. 10" was approximately 4~5 days shorter than that of "Shangshida No. 5". In addition,weight ratio of embryo to brown rice of "Shangshida No. 10" was lower than that of "Shangshida No. 5",while there was no significant difference in the volume ratio of embryo to brown rice between "Shangshida No. 10" and "Shangshida No. 5". The successful development of the new rice strain "Shangshida No. 10" has laid a solid foundation for the further market development and application of red giant embryo rice.