利用FOSS公司 1 2 55型谷物食品近红外透射光谱分析仪 ,对 42 5份玉米自交系和 1 1 2 5份杂交组合子粒的淀粉含量进行测定 ,并对粗淀粉的杂种优势和亲子代间的相关性作了探讨。试验结果表明 ,子粒淀粉在不同玉米自交系和杂交组合间存在显著差异 ,自交系平均含量为 71 .1 0 % ,杂交组合平均含量为72 .56%。 458个杂交组合子粒的淀粉含量与双亲的相关性均较低 ,粗淀粉的杂交优势变异幅度较大 ,平均中亲优势为 2 .1 9% ,超高亲优势为 1 .2 2 % ,超低亲优势为 3 .1 9% ,玉米子粒粗淀粉含量表现中亲优势 ,偏向于高亲。 The starch content of 42 5 maize inbred lines and 1125 hybrid combinations grains was measured by FOSS company’s 1 2 55 type grain food near infrared transmission spectrum analyzer. The heterosis of crude starch, The relevance was discussed. The results showed that there were significant differences in grain starch in different maize inbred lines and hybrid combinations, the average content of inbred lines was 71.1% and the average content of hybrid combinations was 72.56%. 458 hybrid combinations of grain content and parental correlation were low, crude starch heterosis variation greater amplitude, the average pro-dominant was 2.19%, super-high relative advantage of 1.2%, super Low progeny of 3.19%, crude corn starch content of pro-dominant, tend to high affinity.