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以甘蔗２０个杂交组合的实生苗群体为材料．分析了９个产量和品质性状的相关遗传力及其通径系数．结果表明，丛重对丛含糖量的相关遗传力明显大于蔗糖分，高含糖量基因型的选择更多地依赖于产量组分．株高对丛重的相关遗传力大于其他的产量组分，对丛重的直接作用也大，而茎径对４个品质性状有正的相关遗传力．说明在实生苗世代，以株高和茎径为选择方向并适当兼顾丛有效茎数．能达到高产高糖基因型的选择目的．
Seedlings of twenty hybrid combinations of sugarcane were used as materials. The relative heritability and path coefficient of 9 yield and quality traits were analyzed. The results showed that the relative heritability of the cluster weight to the sugar content was significantly greater than that of the sucrose content, and the selection of high sugar content genotypes was more dependent on the yield components. The relative heritability of plant height to plant weight was greater than that of other yield components, and the direct effect on plant weight was also significant. The stem diameter had positive related heritability to the four quality traits. Description seedlings in the generation, with plant height and stem diameter as the choice of direction and appropriate to take into account the effective number of plexus stems. Can achieve high yield and high glucose genotype selection purposes.