长期以来，通常将控制数量性状的多基因体系作为一个整体来研究，用平均值和方差来反映数量性状的遗传特征。
The polygene system which controls quantitative trait was generally studied as a whole for a long time. Average and variance were used to reflect the heredity of quantitative trait.
许多特征的多基因本质和复等位本质，使遗传特点中的变异性具有巨大的潜力。
The polygenic and multiple allelic nature of many traits gives a vast potential for variability among hereditary characteristics.
结果表明，不同组合后代群体的抗性呈连续性分布，表现出多基因控制的数量性状遗传特征。
The results showed that the disease resistance of F 1 hybrids was continual and had quantitative character inheritance that was controlled by multiple gene.
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