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高粱粒重受四组基因控制,符合加性-显性模型。遗传力较高,显性基因为增效基因,隐性基因为减效基因。两种基因的分布频率是不均衡的。大值亲本比小值亲本遗传传递力强,杂交一代多数接近或超过高值亲本,低值亲本对其影响较小。
Grain weight of sorghum was controlled by four groups of genes, which accorded with additive-dominance model. Heritability is higher, the dominant gene is a synergistic gene, and the recessive gene is a subtractive gene. The distribution frequency of the two genes is not balanced. The large-value parents had stronger genetic transmission than the small ones, and most of the hybrids reached or exceeded the high-value parents, while the low-value ones had less influence on the parents.