后代群体盖径、柄径、柄长的变异程度相当，差异性不显著。
The variation degree of pileus diameter is similar to that of stipe diameter and stipe length.
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.
群体数量回升时，这一小部分存活者产生后代，那些基因便被广泛传播开了。
When the population rebounded, those genes were spread widely as the small number of survivors gave rise to all living descendants.
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