通过优质稻米品种系谱分析及主要推广品种的品质聚类分析结果表明 :①吉林省优质稻米品种的遗传基因主要来源于日本的下北和藤坂 5号后代衍生系统。② 80年代以来 ,在育成推广品种的品质亲缘关系中品质的遗传基因来源于三大群 ,即下北、藤坂 5号和吉粳 6 0后代的衍生系统。③通过对日本优质品种和吉林省主要推广品种 7项主要品质指标的对比分析 ,日本的优质品种越光与吉林省品种品质血缘距离较远。因此 ,要改变目前稻米品质垩白米率高和外观差的缺点应扩大品质的遗传背景 ,导入新的优质米基因 The results of pedigree analysis of high-quality rice varieties and cluster analysis showed that: (1) The genetic elements of high-quality rice varieties in Jilin Province were mainly derived from the progeny derivative system of Xiabei and Fujisaka No.5 in Japan. ② Since the 1980s, the genetic quality of the quality genetic relationship of the cultivated and popularized cultivars has been derived from three major groups, that is, the derivative systems of Xiabei, Fujisaka No.5 and Jijing 06 offspring. (3) Through the comparative analysis of seven major quality indexes of Japan’s high-quality varieties and main promotion varieties in Jilin Province, Japan’s high-quality varieties of Koshihikari have a long distance from the blood quality of varieties in Jilin Province. Therefore, to change the shortcomings of the current rice quality chalky rice rate is high and poor appearance should expand the genetic background of quality, import new high-quality rice gene