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试验用９个栽培红花品种为材料，对单株粒重进行通径分析。结果表明，分枝高度、百粒重和单株有效果球数是影响单株种子产量的３个主要因素．在一级分枝数和单株有效果球数多的类型中，选择单株粒数多而重的材料，或者在大粒类型中选择分枝较高、粒重的材料，均可提高单株粒重。但是，在选择分枝高度时，必须兼顾株高和花期天数。油用红花育种，应特别注意通过选择来降低单株无效果球数。
Nine cultivated safflower cultivars were used as materials to conduct path analysis of grain weight per plant. The results showed that the branch height, the weight of 100 seeds and the number of effective bolls per plant were the three main factors affecting the seed yield per plant. Among the types with more primary branches and more effective pods per plant, the selection of materials with more and more grains per plant, or the selection of materials with higher branches and heavier grains in large grains, Grain weight. However, when choosing the height of branches, the number of days of plant height and flowering must be taken into account. Oil safflower breeding, special attention should be paid to reduce the number of balls per plant by selection.