In this study, a recombinant inbred population consisting of 178 lines, derived from the cross of a japonica (D50) and an indica ( HB277 ) were used to investigate its genetic diversity. We have constructed a genetic linkage map with 104 SSR markers, which covered 1 323 cM genetic distance of rice genome and 11.6 cM average genetic distance between each marker. And then, we have discovered 10 out of 28 starch synthesis-related genes can amplify stable polymorphism among 178 plants, after added them into linkage map, eighteen QTLs were discovered. At last, SPSS statistical software was used to explain the interrelationship between starch synthesis-related genes and cooking and eating quality, and the results were mainly the same as QTL's.%利用104个SSR标记对包含178个株系的F7代重组自交系群体(由D50/HB277衍生而来)进行遗传多样性分析,构建了一张覆盖水稻基因组遗传距离1 323 cM,标记间平均遗传距离为11.6 cM的遗传图谱.继而利用28对淀粉合成相关酶基因检测群体多态性,结果筛选到10对有多态的淀粉合成酶基因,整合到遗传图谱上,发现18个调控蒸煮食味品质的QTLs.最后,利用SPSS统计软件计算淀粉合成相关酶基因能解释食味品质表型变异的值,发现计算结果与QTL所得结果大致相同.
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