Abstract:

A total of 28 accessions of rice (Oryza sativa L.) germplasms were collected from International 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 morphological marker lines with each having a unique valuable trait (gene), and the recurrent parent　Zhefu 802, an early-season indica cultivar in South China in 1980s and 1990s. A set of 27 isogenic lines with 2-3 markers on every chromosome were obtained after more than 10 successive backcrosses. Moreover, 15 accessions of double-marker isogenic lines were developed by further pyramiding markers on the same chromosome. Key agronomic traits such as heading date, plant height, tillering number and panicle length in this set of lines were similar to that of Zhefu 802 except the marker traits.

籼稻标记性状等基因系的构建
曾大力 钱 前  董国军 朱旭东 董凤高 滕 胜 郭龙标
曹立勇 程式华 熊振民
（中国水稻研究所农业部水稻生物学重点实验室，杭州 3 1 0 0 0 6 ）

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。
关键词： 籼稻；农艺性状；形态标记；等基因系
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