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渝恢2103是重庆市农业科学院渝优水稻团队以国际水稻所资源IR9129的变异单株为亲本,采用花药培养与常规育种技术相结合的方法培育而成的一个综合性状优良的香稻恢复系,具有米质优、稻瘟病抗性较强、恢复力强、配合力好等优点,于2009年通过重庆市品种审定委员会鉴定。配组的杂交水稻品种渝香203先后于2006,2008,2008和2009年通过了重庆、贵州、陕西和江西等省级品种审定,并于2010年通过国家品种审定。2011年开始连续6 a被推荐为重庆市推广的水稻主导品种。
Chongqing Yuyou 2103 is a sweety-rice restorer line which is cultivated by a combination of anther culture and conventional breeding techniques with Yuyou rice team of Chongqing Academy of Agricultural Sciences as its parent, with the mutation of IR9129 from International Rice Research Institute. With the quality of rice, rice blast resistance stronger, strong resilience, with good combination of advantages, in 2009 through the Chongqing Municipal Commission for identification of species identification. Yixiang 203, a hybrid rice variety with a combination, passed the examination and approval of provincial varieties such as Chongqing, Guizhou, Shaanxi and Jiangxi successively in 2006, 2008, 2008 and 2009, and passed the examination of national varieties in 2010. Since 2011, 6 consecutive years have been recommended as the dominant rice variety promoted by Chongqing Municipality.