【摘要】 选用涉及水稻(Oryza sativa L.)全部12条染色体的、表现简单遗传且易于识别的形态标记材料27份,以早籼品种浙辐802为轮回亲本,经10余次回交,转育成一套籼型标记等基因系。在此基础上,对同一染色体上的标记进行聚合,育成了15份双标记等基因系。该套材料除所带标记性状外,生育期、株高、分蘖力和穗子大小等主要农艺性状与轮回亲本基本相仿。更多还原

【Abstract】 A total of 28 accessions of rice (Oryza sativa L.) germplasms were collected from Interna-tional Rice Research Institute (IRRI), Philippine and Gene Pool of China National Rice Research Institute(CNRRI). These germplasms were attributed as a Donor Gene Pool, consisting of 27 diverse morphologicalmarker lines with each having a unique valuable trait (gene), and the recurrent parent—Zhefu 802, anearly-season indica cultivar in south of China in the 1980s and 1990s. A set of 27 isogenic lines with 2-3markers on every chromosome were obtained after more than 10 successive backcrosses. Moreover, 15accessions of double-marker isogenic lines were developed by further pyramiding markers on the samechromosome. Key agronomic traits such as heading date, plant height, tillering number and panicle lengthin this set of lines were similar to that of Zhefu 802 except the marker traits.更多还原