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本试验用9个栽培红花品种为材料,研究种子产量的选择指数。结果表明,小区种子产量的遗传力、遗传进度都很低,直接选择效果差,通过相关性状进行间接选择其效亦不好.根据大多数选择指数方程对小区种子产量进行选择的遗传进度(86％),比进行直接选择或通过相关性状进行间接选择时的为快,选择效果较好.百粒重和单株粒重是决定小区种子产量的两个关键性状,单株无效果球数亦是影响产量的重要因素之一,选择时应重视.用选择指数对供试的9个品种评审结果表明,单选无刺是综合性状优良的高产品种,B—54是综合性状最差的低产品种。
In this experiment, 9 cultivated safflower cultivars were used as materials to study the selection index of seed yield. The results showed that the heritability and genetic progress of the seed yield were very low, the direct selection effect was poor, and the indirect selection by the related traits was ineffective.According to the selection index equation of the community, the genetic selection of the seed yield in the community (86 %) Than the direct selection or indirect traits through the relevant traits when the faster, the selection effect is better.White weight and grain weight per plant is to determine the two key characteristics of seed yield, the number of fruitless plant ball also Is one of the important factors affecting the yield, selection should pay attention to the selection index of the nine varieties tested the results showed that no thorns radioisotope is a comprehensive high-yielding varieties, B-54 is the worst combination of low Product variety.