When the environment variations are high, the white noise level (coefficient of variation) increases to 35%, the stable fish population becomes spasmodic.

在环境变化较大时，白色噪音水平(变动系数)增加至35%，稳定型种群变为不稳定型。

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When the same recurrent selection porgram was used in various population, the greater the coefficient of variation of the population, the greater the genetic progress it made.

不同群体采用同一种轮回选择方案，表现出变异程度大的群体，选择的遗传进展也大。

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The variation coefficient of TCH was similar to CKs in plant height, chlorophyll content, panicle length, and so on. The heading duration of TCH population was longer than those of CKs.

结果表明，三交种株高、叶绿素含量、穗长等性状与单交种的变异系数差异不显著，但群体抽穗历期延长；

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