论文部分内容阅读
本试验以9个栽培红花品种为材料,进行种子产量相关性状通径分析。结果表明,9个相关性状对种子产量影响的顺序:单株粒重>单株无效果球数>株高>平均每果粒数>开花期>一级分枝数>百位重>单株有效果球数>单株粒数。降低单株无效果球数是提高种子产量的主要途径。在百料重、一级分枝数、单株无效果球数相对稳定的类型中,选择植株高大的材料,是提高种子产量的重要途径。开花期、单株有效果球数、单株粒数通过株高进行间接选择,亦是提高种子产量的重要途径。选择单株有效果球数多的材料,或在百粒重相对稳定的类型中,选择平均每果粒数多者,亦可提高种子产量。在单选单株粒重高的材料,可能会因为其他相关性状的变化而导致减产。因而两两性状间的互作效应对种子产量的影响极大。
In this experiment, 9 cultivated safflower cultivars were used as materials to conduct path analysis of seed yield-related traits. The results showed that the sequence of 9 related traits on seed yield was as follows: grain weight per plant> number of infested plants per plant> plant height> average number of per pod> flowering stage> number of primary branches> weight> Effective number of balls> grain per plant. Reducing the number of fruitless plants per plant is the main way to increase seed yield. Among the types of materials with a hundred-material weight, a first-class branch number, and a single number of invalid-effect ball, the selection of tall plant materials is an important way to increase seed yield. Flowering, the number of effective ball per plant, the number of grains per plant through indirect selection, is also an important way to improve seed yield. Select the number of effective ball per plant more material, or in the 100-grain weight is relatively stable type, the average number of fruit per person to choose more, but also increase seed yield. In the single grain weight per plant material, may be due to other related traits change resulting in reduced production. Thus, the interaction effect between two traits has great influence on the seed yield.